How Come Timing Marks Don't Always Line Up Perfect?

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  • Опубліковано 4 лис 2018
  • Ever do a timing belt or chain and you go to line up the timing marks and find that they’re just a little bit off? This video has the answer to that question.
    Also, if you ever wondered how many camshaft rotations it takes for the same tooth on a belt to come into contact with the same cam gear on a Honda D series engine, this is your video.
    Check out my other channel for repair videos: ua-cam.com/users/EricTheC...
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    The best place for answers to your automotive questions: www.ericthecarguy.com
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КОМЕНТАРІ • 427

  • @juancolon887
    @juancolon887 3 роки тому +55

    I timed my car 4 times with all the marks lined up, once i rotated the engine back it never lined back up, i was going insane. Thank you so much for this video. I can breathe a sigh of relief now. My family left me alone in the garage because i was yelling so loud to myself😂😂😂😂

    • @tag5943
      @tag5943 2 роки тому +3

      This was me rite now until i seen this lol

    • @obinhojuve247
      @obinhojuve247 2 роки тому +2

      It’s happening to me now 😂😂😂😂

    • @danielson2454
      @danielson2454 2 роки тому +1

      Same.. LMFAO

    • @karlbigmore7949
      @karlbigmore7949 Рік тому +2

      I did the same removed belt 7 times so far 🤬🤬🤬

    • @TR-gd8mn
      @TR-gd8mn Рік тому

      Hahaaa thats why i come here.

  • @Keys879
    @Keys879 4 роки тому +9

    Thanks dude, you've been here for me for the last 5 years. Learning how to fix my cars and helping troubleshoot problems. I couldn't have done most of the work without you and this channel. Thank you Eric.

    • @ETCG1
      @ETCG1  4 роки тому +2

      Glad I could help. Thanks for the comment.

  • @garyhunt1816
    @garyhunt1816 3 роки тому +10

    Thanks Eric. I’m doing the belt now and was not sure why the marks weren’t lining up after rotating the crankshaft. You answered the issue perfectly.

  • @NPurvis7622
    @NPurvis7622 5 років тому +48

    It explains my OCD worries and still having an engine that beat ass after a head gasket, water pump, and radiator; at different times in one month, and still breathing like a beast. It made me sketchy, about the work I had done, but after lifting the cylinder head, slapping it down twice, and revving harder than when I bought the car, I felt satisfied enough. All my worries on my first timing/head gasket job, over less than a tooth. Of course they won't say that in manuals, or most people online, liability reasons. Though, all the mechanics around me always told me not to sweat the small things like that here, it's nice hearing the logic behind it. Thanks again Eric! I would rather have a teacher like you than most others any day, keep at your approach and realism, I believe there are many that appreciate it.

  • @Maplecook
    @Maplecook 11 місяців тому +6

    OUTSTANDING video, Eric! You are the only guy on YT who has addressed this issue, as far as I know!

  • @xxS3RG31xx
    @xxS3RG31xx 5 років тому +7

    Excellent video Eric, I don't think I've seen any auto repair channel even discuss this topic. Thumbs up!

  • @ShopTalkWithJason
    @ShopTalkWithJason 5 років тому

    This was legitimately fascinating. Not even being sarcastic.
    Only you could take something trivial, and make a fun and informative educational video about it.
    *BRAVO!*

  • @estlhm805
    @estlhm805 Рік тому +1

    Great video and information! Was going crazy trying to line the timing marks up only to repeat this over and over again.

  • @rjuarez4913
    @rjuarez4913 4 роки тому

    Hunting I think further confuses most , but I’m glad you explained and illustrated how long it takes before our marks will line up again. Excellent

  • @bluephoenix53
    @bluephoenix53 Рік тому

    Thanks so much! I'm rebuilding a Chevy 350 5.7L V8 and the timing marks are slightly off for the timing chain. Not too much. I'm glad I found your video. Now I can move on to the rest of my project because I would be here struggling forever to get it perfectly aligned.
    My rebuild book says it has to be exact but there's no way to get it right on each other.

  • @markpenta1586
    @markpenta1586 5 місяців тому +2

    Thank you! I never usually mark the belt, just line up marks at TDC. On this 1.8t i did both and after rotating marks were off and I could not understand why. You have reasurred me!

  • @autumnbeds
    @autumnbeds Рік тому

    Eric, thank you so much. 🙏 I'm an experienced home mechanic but almost had a nervous breakdown when glancing over at my phasers.

  • @skoomacat13
    @skoomacat13 3 роки тому +1

    So glad i came across this video. I was so scared I jumped a tooth or two.. Turned it a few times and couldnt get my marks to line up again and just gave up.. This gave me a bit of hope back.

  • @christiantorres908
    @christiantorres908 3 роки тому

    Just finished a timing job on a 2005 ford f150 needed to hear this was scratching my head over this thanks Eric your awesome

  • @robertmusci983
    @robertmusci983 4 роки тому +6

    Reason number 14,973 why I love the internet.
    I'm putting a new timing chain on a 3.7 L Ford duratec, I couldn't figure out why the timing marks would point in the right direction every 4 Revolutions of the crank, but the timing marks on the Chain we're always way out of whack. I suspected it was something similar to hunting but now you have confirmed it. And you just saved me 5 hours of misery. I owe you a beer. Thank you!

    • @ETCG1
      @ETCG1  4 роки тому

      It's always great to know when my work helps people. Thanks for the comment.

  • @THERIGGEDONE
    @THERIGGEDONE 3 роки тому +1

    Awesome information Eric! I just timed my F-150 and was crapping my pants when i saw that the marks weren’t lining up!! Whew!

  • @ToughShiftGarage
    @ToughShiftGarage Рік тому

    Thanks for that. I'm having that same problem right now but I took the belt off like 3 times and recounted the teeth over and over!!! Thanks! Now I can relax.

  • @UpTriTie
    @UpTriTie 5 років тому

    Wow that was a crap ton of work for this one video. That explains when i was paranoid about the marks not lining up when i had to move the crank after taking the timing belt off. Internal combustion engines where never supposed to run perfectly. It is a miracle that they do considering all the varibles that go into them.

  • @nastycanasta9304
    @nastycanasta9304 4 роки тому

    The first time you realize this, you think something is drastically wrong with the work you did. I remember my first time. Good video.

  • @michaelanderson6888
    @michaelanderson6888 2 роки тому

    Eric very cool stuff man I was panicked about the links on the chain and timing dots not lining back up after timing the vehicle but the 2 cams and frank line up every second revolution

  • @SuperMarioDiagnostics
    @SuperMarioDiagnostics 5 років тому +7

    Lol i did this once too for absolutely no reason. Can't remember it being that many revolutions though 😮 but pretty cool that you actually filmed it 😆 thanks Eric

  • @TheOutwiththeold
    @TheOutwiththeold 5 років тому +2

    Yeah I remember way back when when I first did my Xterra 3.3 L timing belt same thing happened with me I couldn't figure out why the marks would not lined back up again turns out of course they are install marks only so the little white pen marks would never line backup but of course everything else did so little dimples drives you crazy sometimes thanks Eric

  • @MegaA7777777
    @MegaA7777777 Рік тому

    YOU SAVED ME ON A LATE NIGHT AT THE SHOP. THANKS MAN. ETCG1 ALL DAY.

  • @dmwtech4495
    @dmwtech4495 5 років тому

    excellent video. this is why initial cam to crank timing is important. do that right an all is good. reusing old belt/chain? mark it to each gear, replace it to the exact marked locations. all is good. no worries

  • @simonallsebrook777
    @simonallsebrook777 6 місяців тому

    Hello I'm from England just got 1liter turbo honda civic with wet belt I've got to change it thanks for info Honda dealer recalled them back but don't won't nothing to do with calr saying don't worry I'm going to leave it and sort it out and look at you videos thanks and keep the good work up god bless have a good new year never give up we are all with you😊

  • @urambotauro938
    @urambotauro938 5 років тому +7

    This really threw me for a loop the first time I changed a OHC chain. I rotated the crank a couple of times to verify alignment, only to find the links WAY off. But the TDC marks showed that the crank and cams were still in sync, and that's all that matters.

  • @ruinunes8251
    @ruinunes8251 5 років тому +4

    Eric, hats off to you for having the time to do this workout. Over 50 times? I would give up after 5 times. I was so pissed off when I changed my first timing belt in one of my civics. I marked the old timing belt, moved the marks to the new belt to make sure everything was done correctly, and after rotating the engine, I never managed to get the marks aligned again. Guess what, I tool everything off, did it again, and the same thing happened. I just thought, possibly this is the way it is, god knows. Next day, me and my mate did it all over again, yes, 3 times in total, I just wanted to make sure I wasn't doing anything wrong before starting the engine for the first time after changing the timing belt. After the third time I just thought, screw it, I will start it, and it was ok. Now, before I attempted to change this timing belt, I watched some videos and so on, and I never came across about this so called " Chain or timing belt hunting" just after one year or so I came across another of your videos when you mentioned chain hunting, and I thought, bloody hell, this information is a bit late for me. It would avoid some phenomenal bad language used on the precess of changing this timing belt.

    • @giogio4833
      @giogio4833 Рік тому +1

      I feel your pain...took it 4 times on my panda

    • @ruinunes8251
      @ruinunes8251 Рік тому

      @@giogio4833 join the club 😀

  • @wjccart123
    @wjccart123 10 місяців тому +1

    OMG I've gone through the timing on this Nissan Sentra 5 x now trying to get it to line back up, bout to lose it. Thank you so much for this

  • @CrazyIvan1337
    @CrazyIvan1337 5 років тому +17

    You bring up a good point, Eric. I remember doing the timing job on a 2001 Camry V6, and customer had bought the timing belt kit himself. I recommended buying the Dayco or Gates timing kit, but he went with the dirt-cheapest option he could find (which always surprised me when he did that, because he was certainly well-off, but never understood the value of buying quality parts). Anyway, the marks on the timing belt would not line up with the cams and crank marks no matter what orientation I tried; so, frustrated and concerned, I had him go buy another new timing belt because I wasn't comfortable not knowing if the belt was spaced properly between the pulleys. Sure enough, with a Gates timing belt, it lined up perfectly. It could very well have been fine, as evidenced by your video, and knowing that now, I could have probably gotten away with it, but since I had never done one of those engines before, I wasn't going to take any chances and have to do it all over again!

    • @kuromurasaki5273
      @kuromurasaki5273 5 років тому +2

      sometimes those people are well off BECAUSE they are miserly. If you are always spending extra on everything, you tend to have a lot less overall especially if you are making modest income; but if that same person penny pinches everywhere, it can have a huge effect on savings and therefore you appear more well off (ofc your guy could be a millionaire, but to some extent it still applies ... but you did say a 01 camry, so probably not 'rich').
      And to be clear, sometimes those cheap things ARE the same. Go to Wal-Mart. Look at Melitta coffee filters and then Great Value coffee filters. The only literal difference is the bag they are in and how much melitta cares about how centered that stack of filters are in the bag (they care very much, and the display cases, they need to be lined up straight too). I worked for a company that made them, the difference between runs was a bag switch and if the machine was slightly off, how finicky you had to be straightening them in the bag and keeping up with the machines. This company also made wet wipes, Clorox had their own line and product (they owned it) but the other lines for store and other brands were pretty much the same outside changes for 'natural' or brand specific scents (rare); and the hospital only line.
      The quality was all good, the company wasn't bad; just know that many products are a label or sometimes a container change, but can be the exact same product inside. If you ever wondered why something looked very similar or smelled pretty much the same, that is why. The products are basically contracted through other companies that focus on that industry.
      I worked for dayco at one point, they shipped hoses to a lot of places including actual manufacturers, not just your local parts store. If someone has that knowledge, they may just buy the cheap generic thing because they truly do believe it to be the same; and I guess he trusted your judgement and realized they could be different as well. That would be my attitude towards it except I usually do tons of research first, and hopefully if I found a mechanic that respected my efforts and willing to have a short conversation about the parts I want to get to put on the car, we wouldn't have one of Eric's other video's problems, the customer that buy bad/wrong parts and makes their life harder; that would never be my point, I just want to know what I put on and would like to purchase it. Like if I wanted Idemitsu oil in my car instead of generic 0w20 they get in bulk because it is proven to work in rotaries as it is what Mazda used at LeMans and in their race series to this day, it was developed specifically for the rotary and its use in being used in the combustion chamber to lubricate the seals and burn cleanly. (that is the type of research and detail I consider respectful to a mechanic that respects me, but what the hell do I know, I'm just passionate about the cars I own and want as much involvement as I can get, but I'm clumsy when I work on cars and usually hurt myself and sometimes the car, so I try not to do major stuff any longer so I don't break something (car or self!)).

    • @Smashachu
      @Smashachu Рік тому

      @@kuromurasaki5273 You scratched the surface with this mindset, having capital allows you to be opportunistic with your investing. But this is a situation where you have to calculate if the upfront cost savings offsets the amount of time until the next belt change and the increased odds of the belt snapping and seizing up the engine. I would argue with the risk to reward ratio of purchasing a compentnet as important as a timing belt, you're much better off spending 100 dollars more to leave you that cushion for what if it does snap and costs you 4-5k towards an engine swap.

  • @MrJet30
    @MrJet30 Рік тому

    I have wondered about this for years but never really researched it, thanks.

  • @NeoJSsk
    @NeoJSsk 4 роки тому

    Im glad I saw this first lol, I was about to start rotating mine to make sure is align and was gonna take me a while to figure-out is miss-align

  • @joaquinaguirre2976
    @joaquinaguirre2976 2 роки тому

    Thank you ETCG1. Good info. It help me to understand a lot more how does the system works. I appreciate.

  • @IanLandesman
    @IanLandesman 5 років тому +1

    Why would anyone thumbs down this vid? EXCELLENT INFO!

  • @_Epictetus_
    @_Epictetus_ 4 роки тому +12

    Thank you for making this video. I just about had a heart attack when I did my timing. I did the exact same thing other people did. I aligned everything spun the crank around numerous times to make sure that the belt marks came back around. I literally thought that I had bent all of my valves, lol. No more paying attention to the belt marks for me.

    • @ETCG1
      @ETCG1  4 роки тому +1

      I'm happy to help. Thanks for the comment.

  • @alexramos3898
    @alexramos3898 5 років тому +1

    Your a damn wizard you reading my thoughts I just changed a timing chain and was thinking about that I'll try on mine to thanks perfect timing 😉

  • @giogio4833
    @giogio4833 Рік тому

    Thanks for this...just changed belt on my old panda and on flywheel marks seemed a couple of degrees out..tried to reseat belt 4 times.now I know why👍👍👍👍

  • @treborkciddur
    @treborkciddur Рік тому

    thanks man, this saved me some grey hair, I changed my belt on my Lexus and after the first rotation it didn't line up any more...now I know why!

  • @kasyak85
    @kasyak85 5 років тому +1

    This is awesome, thank you Eric, this addresses this question that was always in the back of my head. If machining is so fine nowadays that they can target tiny fractions of a mm precision, why are the marks off??? Now I know why

    • @brandynoble4604
      @brandynoble4604 2 роки тому

      I've noticed if the heads been milled twice and or the block decked it can cause this. Half tooth off..great video

  • @ScrewySquid
    @ScrewySquid 5 років тому +1

    Thanks you I was so close to pulling the belt off again. I noticed my crank and cam gears we're in the right spot but the belt was way off. Short story thank you

  • @bstraub95
    @bstraub95 5 років тому

    I’ve waited years to catch this on my actual birthday!!!

  • @ZEROORDIELOSER
    @ZEROORDIELOSER 5 років тому

    Always hated that and was scared that I was gonna mess something up thanks for the info ur the man!!!!

  • @Omardottcom
    @Omardottcom 11 місяців тому

    Wooooow! I never knew that and definitely didn’t think it would have taken so many! Cool. Learned something new today. Thanks!😮

  • @omerbayrak1808
    @omerbayrak1808 3 роки тому

    Wouww. Everybody just shows how to rotate the pulleys but you are explaining what we should expect and why we should not surprise if we cannot align at the first place. Now it makes sense. The question is when should we align the timing belt?)I mean I want to change only tensioner. I am planning to use old timing belt. Do I have to still align it?

  • @anthonysalinas6195
    @anthonysalinas6195 5 років тому

    Thanks for all the videos will definitely be watching the timing belt videos when I replace my timing belt on my civic

  • @mtb_landin
    @mtb_landin 4 роки тому

    Wooow.. I never knew that, it's nice to learn something new after so many years.. love your videos btw.. :)

  • @samholt2062
    @samholt2062 5 років тому

    It actually is my birthday thats weird that i just happened to watch your video. I love your. Videos i find them most informative

    • @ETCG1
      @ETCG1  5 років тому

      Happy Birthday!

    • @samholt2062
      @samholt2062 5 років тому

      @@ETCG1 thank you😄👍

  • @davedunington7637
    @davedunington7637 2 роки тому

    I knew they HUNTED, but never would have guess how many revolutions to get back home... enjoyed that .. Thank YOU

  • @steveclark..
    @steveclark.. 5 років тому +1

    That reminds me of the first time I did a cambelt, a twin cam at that, I added my own marks on the belt and pulleys, I wondered why they didn't all line up again soon when manually turning the crank.

  • @EppingForest304
    @EppingForest304 5 років тому +45

    Wow... very interesting, never heard about "hunting" before. Never told us that in tech school. Learn so much from Eric, thanks 🙏

    • @aussiebloke609
      @aussiebloke609 5 років тому +4

      I believe final drives are usually the same, and for the same reason. it spreads out any unevenness in wear - rather like rotating your tyres. :-)

    • @JuanMendoza-pv4tk
      @JuanMendoza-pv4tk 3 роки тому +1

      @@aussiebloke609.

    • @JuanMendoza-pv4tk
      @JuanMendoza-pv4tk 3 роки тому +1

      @@aussiebloke609 ....

    • @JuanMendoza-pv4tk
      @JuanMendoza-pv4tk 3 роки тому

      @@aussiebloke609 mc..... El problema. M. ...mc

  • @8iht
    @8iht 5 років тому +2

    I once had to remove the Bosch fuel pump on a Jungheinrich forklift with a Perkins diesel engine,took me about 35min to align all 5 marks on the gears(no belt,no chain,5 sprockets)

  • @muasboy
    @muasboy 5 років тому +2

    Ive always wondered about this. I always thought it was a quality assurance issue. Now I know. Always best to hear it from Eric lol
    Btw, my profile picture are a set of k20a3 cam shafts and gears lol

  • @seanc6128
    @seanc6128 5 років тому

    Finally! It IS my birthday! Thanks Eric

    • @ETCG1
      @ETCG1  5 років тому +1

      Happy Birthday!

  • @Patrick94GSR
    @Patrick94GSR 5 років тому

    On DOHC Honda engines with 2 cam gears, there are timing marks on each cam sprocket that directly align with each other when at TDC. After I replaced my head gasket and had the head resurfaced, the timing marks were just every so slightly off from one another, 1-2 mm or so. I just went with it, and the engine has run just fine in the 35,000 miles since I did the work.

  • @spelunkerd
    @spelunkerd 5 років тому +34

    I thought about that for a couple of minutes the first time I noticed, then I slapped my forehead for not understanding right away. Of course there is no specific limit of the belt length, it is as long as it needs to be to get around all the pulleys. The key to timing is that there are twice as many teeth on any camshaft pulley as on the crank pulley. The belt itself is only a passive participant, much like the road in a Nascar race. Even a small uniform stretch will affect the cam and crank pulleys equally, and timing stays in line! Manufacturers like to choose common lengths just so their parts dept can supply the same part to many engines. The mark will move around the perimeter of the belt path by exactly twice the number of crankshaft teeth every cycle, so the mark on the belt naturally creeps even without somebody planning it out. They aren't confined by the notion of keeping the belt length to pulley length to a specific ratio. The mark doesn't even have to return to home after a specific limit, though with the carefully designed notch spacing it will seem to do that because the length needs to be an exact multiple of one notch length (so that there are no gaps where the belt is joined end to end in the factory). As long as the pulley timing marks are aligned properly, the universe is in sync.

    • @DENicholsAutoBravado
      @DENicholsAutoBravado 5 років тому +2

      I've read a lot of fun comments about this video. This is fun too, but it's also the best explanation I've seen. Great comment. Good to see you Spelunkered.

    • @throttlebottle5906
      @throttlebottle5906 5 років тому

      it would be one very odd "short engine" to make it line up on the cam every other rotation even (belt would be exactly 2x diameter of the cam, lol)
      the longer the belt, the more rotations it takes to line back up at the cam and 2x that at the crank since cam runs half the rotational speed. rocket surgery =p

    • @Currancchs
      @Currancchs 5 років тому +3

      271 rotations to get the marks to line up again on a Subaru EJ25 (2.5L motor used in WRX/Sti and other Subaru models)! Eric should consider himself lucky that he didn't try this experiment on that motor!
      P.s. thanks for the explanation!

    • @djrdx2124
      @djrdx2124 5 років тому

      yeap, exactly. when we make some custom engines, theres actually a few different belts that will work on something like...
      lets say, a RB25/30 (rb30 SOHC block, with a RB25 DOHC head on it) , depending on where the new tensioner and idler pulley locations are,
      anything from a 250 to 255 tooth belt, usually we'll use a 253 tooth belt,
      just to have an easier time installing the belt, without too much slack

    • @raybin6873
      @raybin6873 3 роки тому +1

      Your comment fully explained it best! Thanks! 😁👍

  • @adriantrinidad6618
    @adriantrinidad6618 4 роки тому

    Thank you for letting me know this I have an 06 Chrysler 300 and it was just a half a teeth off I was worry about it would mess up

  • @frankfakename6663
    @frankfakename6663 5 років тому

    THANK YOU!!!. sorry to shout but, that really helps me. I thought i would be ok but you splained that real good.

  • @wyattandwill12
    @wyattandwill12 Рік тому

    Beautiful video. It seemed everything was fine despite the chain seeming a bit loose (changing it anyways, engine rebuild bc of overheating 70K mile car from ‘99). This vid shows that it’s probably fine that it’s slightly not perfectly lined up.

  • @68pishta68
    @68pishta68 Рік тому

    My Ford Courier 2.0 did this and I didn't know why, Now I do! I counted 53 turns to get it back to "installation links to dots" and strangely it had 106 links...double the rotations..? It was a 19/36 gear set.

  • @RobertCiampa9112
    @RobertCiampa9112 5 років тому +2

    Wow, All these years ,Never new. Thanks!

  • @deadguy237
    @deadguy237 5 років тому

    Now it all makes sense. I always kind of wondered why they were a little bit off. It made my brain hurt when it wasn't perfect. Engineering at its finest.

  • @fireyourrocketts
    @fireyourrocketts 5 років тому

    Hey man great video; I subscribed! I am at the timing part of assembling our 2004 Toyota Corolla 1.8 engine, following manual and advises from Toyota certified Mechanics from the dealer every one says it is not a big deal. We have been taking our time to put this engine together again, its been two months since I started getting it out of the car; I am not a car mechanic, this is my first time ever working in an engine at this magnitude and level and want to make sure the car not only will start once the engine is back in but that it would run too! now here is my scenario; Hynes book states exhaust sprocket (new) and VVTi sprocket's marks should be parallels to each other and in line with the timing chain cover, mines are like that, maybe the VVTi is a hair up; now down at the pulley I have the mark on it slightly to the left of the 0 mark; from right to left there is o mark, then a notch then a 10 on the timing cover; that I don't know what the other marks would tell me and I can not find that info anywhere; I just told the 0 reflects the TDC, yet there is some kind of "free play" (when I say free play, I do not see or feel anything worn out in the pulley or the crankshaft itself; crankshaft was polished the journals only at the shop but where the pulley goes was not touched so the pulley does not wiggles; in the timing gear parts everything is new except the VVTi Sprocket and its assembly) of the pulley in relation to the upper sprockets, like I can actually stay on top at the marks aligned then hitting the pulley by the 19 mm socket and breaker bar I can actually make it to get perfectly on the 0 position and then my VVTi sprocket is up by half a millimeter in relation to the exhaust sprocket mark next to it! Mechanics say this is fine, I am still nervous about it and have been thinking while the engine is on a stand, to undo the timing cover and try realign everything again????? My other concern was a slack of the chain (new) between the two top sprockets while I rotate it by hand, it is a slight dip but I thought that was an issue; two mechanics told me that is fine, in any case, another thing is the book tells you that the two top sprockets should be at 12 o clock position when installed; I tried this BUT the chain links marks where they fall on the top makes the two to be slightly off 12 oclock; the VVTi points 12:05 while the Exhaust leans 11:55! this throws me off because while sitting like that the marks on the side of the sprockets that meet next to each other are almost exactly aligned parallels to each other and in line with the edge of the timing cover as well! so seems there is no way to get it all to align perfectly! I WONDER keep wondering if I am fine or something needs fixing because my lack of experience? --- moving to a different "issue" I kind of concern myself with is with the head itself which was sent to a machine shop for prep and assembly; the valves were seated; the bucket lifts had been mixed out of positions by an Autozone "I know this" rep; I do not know exactly how they matched them again; the buckets have writings on them; I think he told me they grind the stem on the valve to "specs"; thing is the specs that are showing in a sticker on the car hood states the clearances for exhaust is 0.025 to 0.035 but in cylinder 1 I can not slide under the 0.025! the next one that goes barely in is the 0.023! ; would this be a problem????? That 0.025 feeler gauge does not goes under any of the buckets on the exhaust side; for clarification I am trying it with the elbows of the camshaft straight up. Everywhere else I have ok clearances the intake is from 0.015 to 0.025 and the 0.015 goes in each one of them, as well this gauge goes under the exhaust side ok but that is not the spec the manufacturer calls for so I don't know if this matters maybe this machine shop did not do a good job? Would I find out once the car starts?. I am a mechanic for ATM machines, in my field it is impossible to ignore tolerances without issues in the machine; less attention to detail techs do it all the time on the field and invariable sooner or later there are repeated service calls and difficulty to diagnose an issue and it always rest in a tolerance that was overlooked; this is why I am so concerned here; my own lack of experience and "don't know how" is killing me, lol. But I have to deal with it and do it because I can not afford the street mechanic and less than less the dealer with this big engine overhaul; the price exceeds the value of the car!

  • @christianarreola9659
    @christianarreola9659 5 років тому

    This is the design that’s not given in repair manuals in order to prevent because they might be afraid that it would cause people to set timing a tooth apart. Every time I did a stupid timing belt on my Honda’s I though it was my fault because the stupid pictures on the manuals would show it lining up perfectly, it was a major learning curve that I eventually got over. This video would have been so useful back then lol well I hope it helps people. I learned the stressful way.

  • @justincarney1250
    @justincarney1250 3 місяці тому

    this saved my life just about to strip the motor down as I thought I had jumped the teeth , now makes sense why the mark on the chain disappeared but my sprockets remained in line

  • @tonyarguello192
    @tonyarguello192 5 років тому +2

    ONE DAY after my timing belt change on my 92 Acura integra GS! I was wondering the same thing 😁

  • @asunaelmarit9951
    @asunaelmarit9951 4 роки тому

    Good video, explains a lot, quick question, if my crank sproket timing mark is lined up with the arrow on the oil pump at TDC, and both my cam sprocket timing marks line up, how's come my crank pulley timing mark doesn't line up with my lower timing cover timing mark?

  • @petermescher332
    @petermescher332 5 років тому

    The manual for my B5 Passat had you make sure the crank and one cam sprocket (I think it was the exhaust) were both really close to the marks on the block/head, and then they should be completely "on the money" when you pulled the pin on the tensioner. I'm not even sure the belt itself came with timing marks, since they become useless as soon as you rotate the crank to check for proper operation.

  • @patx35
    @patx35 5 років тому

    Shade Tree Mechanic Pro Tip: If doing a timing belt with a mechanical (or spring with a jamb nut) tensioner, and the timing marks seems slightly off, check if the belt tension is set correctly. I was doing a timing belt job on my Nissan 300ZX and I noticed that the timing marks didn't exactly line up. I started turning the engine over by hand and the belt got sloppy either between the crank and a cam gear, or between both cam gears. Retensioning the belt fixed that.

  • @pa1264
    @pa1264 5 років тому

    Is this the same set up for a Mazda protege 323 2000 model i went to loosen the screw on one of the sprocket the left hand sprocket timing Mark move do I need to put the belt back to reset the timing marks?

  • @EarlSinclair97
    @EarlSinclair97 5 років тому +3

    Years ago, my shop "mentor" explained this to me, but I had neither the apptitude nor capacity to understand. 22 years later, Eric explains it, and it's like: oh yeah, duh. That makes sense.

  • @TruongLe-eo8kh
    @TruongLe-eo8kh 4 роки тому

    This answered my question, what about those Honda odyssey V6 engine? Does both front camshaft marks have to line up perfectly to the marks on the timing marks? My rear camshaft was off a little bit but mine van is running fine after timing belt replacement job. Could it cause a p0420 code for a little off?

  • @I69Sk8er69I
    @I69Sk8er69I 4 роки тому

    Very interesting thank you!
    So I have a job on a SOHC on my daily driver coming up where I’m changing the sprocket for the cam and the crank shaft gear because I’m pulling them out with the chain tensioner guide.
    My question is this
    I have a method to keep the new sprocket, cam, and crank gear, all identical when I place the chain, but do I need to make the chain timing marks match the sprocket and crank or will it be fine if the crank and cam are timed with the sprocket?

  • @Winterborne204
    @Winterborne204 2 роки тому

    Thanks for the info, just out of curiosity does it matter if you turn the crank clockwise or go counter clockwise?!?

  • @kylesa1323
    @kylesa1323 5 років тому

    Thank you for the video I have a 5cyl. Volvo I need to do a head gasket on soon. Have you ever heard of early 2000s Kia's having ignition lock problems I'm working on over that's been sitting for a long time, I put a battery in and I can't get the key to turn more than one click thank you in advance I love your videos plus you look just like my best friend lol

  • @tuffytoys9707
    @tuffytoys9707 5 років тому +1

    Thanks, I did not know about that. I wanted to check my timing belt on my Mitsubishi Lancer but i was so unsure about getting the timing correct that i took it to a mechanic shop to have it checked. Turns out it would have cost a lot less if i just did it myself. Thanks for making the video. If you can can you make a video on the timing belt replacement on a double cam engine japan made vehicle.?

  • @laurenbina4188
    @laurenbina4188 5 років тому +4

    The perfectionist in me doesn't like it, but, it makes sense. Thanks, Eric!

  • @rickpalechuk4411
    @rickpalechuk4411 5 років тому

    Interesting topic Eric. Unlike the old days of the chain in the Sb Chev where tooth count was the ratio, belts rely on gear diameter for ratio and tooth quantity is is developed with odd number. 🤔

    • @aussiebloke609
      @aussiebloke609 5 років тому

      Same thing, really - tooth count is a direct ratio to the gear's size, as the distance between teeth is set by the size of the chain links, so a specific tooth count would mean a set circumference for that sprocket. You can still count the teeth on the gears if you're using a belt instead of a chain.
      The biggest difference I see with belts is having a tensioner, which a lot of older engines (especially OHV) don't have. The tensioner lets the designers change the number of teeth in the belt a touch if needed by adding a tooth to the belt and designing the tensioner to take up just a little additional slack (as well as being needed because belts tend to stretch more readily.)

  • @DIGonzalez84
    @DIGonzalez84 2 роки тому

    if they are ever so slightly off, and I have dual cams, then when my exhaust cam in showing TDC but my intake cam is a hair behind in rotation. which TDC mark on which cam gear should i use as my TDC when adjusting my valves?

  • @wrightsrrt871
    @wrightsrrt871 2 роки тому

    I have an question for you, I set an timing belt and the mark for the 2 top dead centers keep hitting dead on but no matter what I do the crank saft mark keeps landing slightly left of zero tried resetting it 3 times. It's on the 1990 3vze Toyota engine?

  • @petrodangellia1819
    @petrodangellia1819 5 років тому

    very interesting, I never thought about it...I guess it's made to hunt over and over to distribute equally the wear and tear of the belt or chain evenly. That's efficient engineering.

  • @seamuspurcell5065
    @seamuspurcell5065 3 роки тому

    thanks for that , almost finished working on a bike , with that very same puzzle

  • @michaelcoleone9665
    @michaelcoleone9665 4 роки тому

    I have a 05 sonata 2.7 with dual over head cams, the front bank (closest to radiator)rotates and lands drirectly on the mark, however the other cam skips right over it, any suggestions?

  • @chadpowell7983
    @chadpowell7983 3 роки тому

    Good video thank you! So I was setting the timing on 2009 dodge ram 5.7L and it lined up correctly and I released the tensioner but I rotated the crank 1 more time and it didn't line up, so???

  • @ivansantamaria9320
    @ivansantamaria9320 2 роки тому

    so so so. i removed the timing cover on my 2011 v6 stang bc im doing the timing chain. i found the camshaft phasers timing marks dont align with the timing chain marks. Alldata says to put piston 1 at tdc which i did and the picture they show, the right side cam phaser is slightly offset pointing to the right and the left phaser slightly offset pointing to the left. however when i have my engine at tdc for poston 1 and the timing marks from the timing chain, the phasers dont show as the picture from all data. my right phaser is slightly offset pointing to the right as shown on alldata. but my left side phaser is more straight up and down. i want to know is this is anything very bad before i remove it. idk if this will mess me up during installation.

  • @jimmybiller1119
    @jimmybiller1119 9 місяців тому

    2012 honda pilot. Two timing marks line up but one is off buy four teeth can I turn the one crank back to the mark with the belt off

  • @raymanjohan8838
    @raymanjohan8838 3 місяці тому

    Ive been watching you for years and just realized I hadnt subscribed to your channel...I remedied that problem today...sorry about that

  • @TRY81GETYOU
    @TRY81GETYOU 4 роки тому

    Hi there plz can you help me out I try test that website you said I will answer but is not work so I have now 2012 Ford Focus se I change
    Head gasket my self but won’t star the car now and I forget to pot marks on the timing chain plz tell me how I’m going to do it how going to link up

  • @elistigile7065
    @elistigile7065 Рік тому

    Hi Eric,
    I’m installing my timing best now and the 2 solid lines match up with the tdc marks for the camshaft pulleys but the dotted line is a few teeth off for the crankshaft. Should I be concerned? Should I line up the crankshaft line and not worry about the camshaft marks?(this is what I’m thinking is the point you’re making in this video but I want to double check) thanks!

  • @simonnather4053
    @simonnather4053 3 роки тому

    adding. i turned in my clio 1,2 2002 for timingbelt and tensioner change, after that my car dont go as fast any more..... im useing km/hour so top sped on it before was 160 km/h and pritty fast to go there to. now it go to 150 km/h and it takes long time from 135 km /h can it be one tooth wrong they set it ?

  • @andrewtheautotech
    @andrewtheautotech 5 років тому

    What about if it is all lined up when the belt is put on, the piston is tdc and the cam gear marks are lined up. But when I turn the engine over by hand, the piston goes to tdc but the cam gear marks are off a couple teeth? I don’t understand it was completely lined up before hand.

  • @pirihern9329
    @pirihern9329 5 років тому +2

    Thanks for the heads up.

  • @racerxv6valvoline424
    @racerxv6valvoline424 4 роки тому

    Eric, if my 360 jumped a tooth or 2 how do I make sure it is aligned when I replace the parts?

  • @moraesronaldo98
    @moraesronaldo98 3 місяці тому

    Question Eric! My time belt broke a tooth and the belt is slipping, when I try to align it I can't. Is there a way to align the engine without the belt?

  • @HollywoodHornet
    @HollywoodHornet 5 років тому

    I have an automotive question. If I am replacing tires and aligning the wheels at two different locations, does it matter which of those I do first? Are there pros and cons to doing one or the other first? Does it not matter either way? What's your take on alignment first or new tires first?

  • @ericxiong6582
    @ericxiong6582 5 років тому +2

    That's what I've been telling people all the time, when it comes to setting the timing on Honda engines. Just as long as the crank pulley is set to TDC, make the cam gear at closest as possible to factory specs. It will start every time. People have a tendency of setting the cam gear first and then the crank pulley, which leads to jumping a tooth or two and not starting.

  • @luiscastaneda4212
    @luiscastaneda4212 4 роки тому

    I just did a timing belt and the lines don't line up on the cams but on the crankshaft it does so is that okay

  • @NotJustAnotherCody
    @NotJustAnotherCody 28 днів тому

    Wow, doing dodge/chrysler 2.7 lined it up perfectly, rotated to watch them realign any one that's done anything with timing knows the feeling that over took me instantly when it never did line back up but I only rotated it 20 times maybe.

  • @XxChrisxXBedofRazors
    @XxChrisxXBedofRazors 4 роки тому

    Thanks for the video, in my case... the bottom mark was on the arrow and the top wasn't. And if the top was - the bottom wasn't aligned.
    What if I take off the belt and align both to the arrows? what'll happen? I made a huuuge oopsie working on my Dodge Neon '04.

  • @blairguinea6811
    @blairguinea6811 4 роки тому

    Hey Eric............awesome info AS EVER , man you are the BOSS !.........

  • @kevinwilliams-qz5rm
    @kevinwilliams-qz5rm 4 роки тому

    Hey eric got a question. I replaced a timing chain gears and tensioner on 09 dodge avenger 2.7 and as im rotating the engine i noticed that the tensioner and guide seem to slap. Almost like the tension doesnt full extensend to keep chain tight. Thought maybe tensioner was bad. Bought another new and same thing. Each rotation i go to make sure the marks line back up which they dont now after i seen your video im going to try the 52 rotation or so to see. But the tensioner guide is more of my concern? How do i fix that

  • @pcdetail602
    @pcdetail602 Місяць тому

    Question, to line up my timing mark do I just do it from the bottom or top also ?