Engine Knocking? Let's Investigate & Find The Real Problem!

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  • Опубліковано 23 лис 2024

КОМЕНТАРІ • 151

  • @haneyoakie14
    @haneyoakie14 Рік тому +28

    $200 Jeep plus $200 Alternator = years of good service for your Dad. That is awesome. Thanks for the education.

  • @Anonymous-it5jw
    @Anonymous-it5jw Рік тому +17

    My son's 2019 GMC Yukon was making a "motor noise". I could hear it and reached into the front of the motor, while was running and laid my finger on the tensioner bar that keeps the serpentine belt tight, and could feel the plastic tensioner wheel bouncing on each revolution. My son was in a hurry and I told him he either needed a new wheel with better bearings, or to have the existing bearing lubricated. Since it is his daily driver, he took it to the dealer, who suggested valves and lifters, and possibly new cams, and told him it would take 3 weeks to even look at it. He then took it to the local experts in his town, who can literally fix anything from a Maybach to a VW, told them what I had said, and what the dealer suggested, and they spent a minute filling the bearing with grease. End of Problem.

  • @spelunkerd
    @spelunkerd Рік тому +27

    I love these kind of humbling stories.

    • @WrenchingWithKenny
      @WrenchingWithKenny  Рік тому +7

      Thank you ❤️

    • @kenj.8897
      @kenj.8897 Рік тому +3

      Yeah humbling to the crappy mechanic that condemns a good engine. 👍 Good vid

    • @eddie8279
      @eddie8279 Рік тому +3

      Kenny I absolutely love your videos,a real guy doing real car stuff! Thank you for sharing of your wisdom and experience!

    • @robbieturnbull4253
      @robbieturnbull4253 26 днів тому +1

      @@WrenchingWithKennya fan clutch on my 07 trailblazer fooled me into thinking it was a rod to it sounded just like it you would of swore it was a rod also the water pump can sound like a rod knocking to because as you said that noise transfers through the block you are correct about something else to there are a lot of crooked mechanics out there that will say oh it needs a motor just to get money a fan clutch and water pump can also fool you into thinking it’s a rod but I took the belt off like you and the noise went away so I spun the water pump by hand and it sounded just like a rod the knock and chirping sound a rod makes spinning faster with the belt on it really makes you think it’s a rod awesome job I watch all your videos

  • @davidparnell1893
    @davidparnell1893 Рік тому +13

    Kenny, you don't just repair mechanical failures, you pass on a great amount of hard earned wisdom to your audience and I enjoy your videos and your southern personality. You are part of the core pillar of America, the honest, intelligent blue collar folks who ARE America.

  • @northpoint1039
    @northpoint1039 Рік тому +7

    In 2010 I needed a car bad. Went to look at a "dealer special" adv. car. They said nothing was wrong with it but I got the thing for half the adv price. Found out that the car would blow the gas pump relay and the fuse box (under back seat) was melted where the relay plugged in. I removed the fuse and relay, I rewired an external relay and fuse. Cost me like 20.00 bucks total. This is my 2008 lucerne with Buick's best engine - the 3800. I still drive it today - its been 13 years. Always starts always runs. I am very religious though on maintenance though. I have 160k on it now.

  • @TheBaaramewe
    @TheBaaramewe Рік тому +7

    My first thought was a bad bearing in the engine. Thank you for teaching me something new!

  • @oneeyedjack4727
    @oneeyedjack4727 Рік тому +11

    I had a friend put 2 starters and a battery on a pontiac 3.1 v6 back in the nineties. It still would not turn over. He finally noticed the crank bumping over a tiny bit when trying to start. Yes, the alternator was seized and holding the engine by the belt. The first thing in mind isn't always the right thing.

  • @kenk3102
    @kenk3102 Рік тому +15

    ....great tip Kenny on loosening up that belt and then listening to the engine running....awesome....thanks for posting... 🙂

  • @smaring777
    @smaring777 27 днів тому +2

    I have a 2001 Expedition 4.6L 2V with the EXACT same knocking sound. The A/C stopped working about a year ago around the same time that I rebuilt the engine. I had another DIY mechanic listen to it and he thought it was likely an oil journal clogged to the crankshaft bearings. I had my doubts since the sound seemed to come and go. I disengaged the belt and the knocking STOPPED! I put it back on, and the knocking resumed. Kenny, you are my hero sir! Bless you!

    • @user-h2db3u
      @user-h2db3u 11 днів тому

      That A/C clutch is about to fall apart. I have been through it multiple times Either fix the A/C compressor or get a bypass pulley and bracket

  • @b.s.g.1586
    @b.s.g.1586 Рік тому +11

    I have a 2000 Ford E150 with the 2 valve 5.4L. it works great IF I change oil regularly, use 5W-20, (NOT 5W-30 as the manuals says) & keep it topped up. If it gets low on oil, if the filter gets clogged up, if the oil is to heavy, then I get valve noise, rough idle, sluggish performance,etc. Ford put out a service bulletin on the 5 4L engines saying to use 5W-20 oil. The 5.4Lhave a few issues but they work great if you pamper them a bit. The critical thing seems to be oil, if it has oil issues the plastic timing chain tensioners break & you'll be doing major work. Oil is cheap compared to a motor job.

  • @kelvinrf
    @kelvinrf Рік тому +3

    At first glance that vehicle looks nice and clean. That should make you enjoy fixing it that much better.

  • @24roughing76
    @24roughing76 Рік тому +8

    Great video. Thank you. You are proof that there are still some real mechanics left instead of the majority of "techs" that can read a code reader or laptop and throw parts at cars.

  • @petem6291
    @petem6291 Рік тому +2

    One thing I learned as a younger technician was the three c . The concern the cause and the correction. 1 you have to confirm what the customers complaint is.the concern2) what is the cause of the problem ( back it up with a test ) what is the correction. That was from a U Haul training class. I fixed a lot of cars properly with that information. Never guess always test ….

  • @ruzterruzter
    @ruzterruzter Рік тому +9

    When I was in 1st year mechanic school our instructor got us all to list as many things as possible that could sound like an engine knock, it was a long list.

    • @WrenchingWithKenny
      @WrenchingWithKenny  Рік тому +5

      Absolutely! That is another reason why it is important to talk to the customer about their concerns regarding their vehicle. Thanks for watching!

    • @user-h2db3u
      @user-h2db3u 11 днів тому

      @@WrenchingWithKenny The craziest thing that sounded exactly like an engine knock i have experienced. Was on a 4.9l i6 Ford F150. Every other time I started it. The starter gear would stay engaged to the flywheel. It ran fine but sounded like it was about to die from rod knock. I also probably damaged some electrical components. Because the starter was generating current.

  • @gokaneinthemembrane2745
    @gokaneinthemembrane2745 Рік тому +1

    Dude! Thank you. If i hadn't have seen this, i wouldnt have believed it.
    My shopping used cars knowledge has just become stronger.

  • @ginog5037
    @ginog5037 8 місяців тому +1

    Great video and story, Kenny. By far, the most realistic honest mechanic on UA-cam.

  • @jfonestar
    @jfonestar Рік тому +2

    Years ago, I went with a friend to look at a late 90's Lecacy wagon. It had the EJ22 engine with a loud rattle noise. A shop had told the owner it needed an engine. My friend bought it for $700. The water pump was bad. We replaced that along with the thermostat, timing belt and cam seals. He drove that car for years.

  • @garya9875
    @garya9875 Рік тому +3

    Wouldn’t have believed that thanks for a very good video Kenny.

  • @thomask4836
    @thomask4836 Рік тому +8

    Kenny,
    I can't decide whether to describe you as amazing, or brilliant. Perhaps both!
    Take Care,
    Tom K.

  • @DavidWeinberg-cm9xd
    @DavidWeinberg-cm9xd Рік тому +4

    The "process of elimination" works wonders for mechanics? Thanks for showing that method in reality, Kenny.

  • @dm7097
    @dm7097 Рік тому +2

    That’s crazy!!
    I thought for sure there was some timing issue going on with that motor.
    Thank you for teaching me something today.

  • @canadatransistor
    @canadatransistor Рік тому +2

    Test don't guess is always best, especially when the test is practically free!

  • @jeffreyevens2033
    @jeffreyevens2033 Рік тому +5

    That's a good story. I have never removed the belt like that. I will now.

  • @carsten4594
    @carsten4594 Рік тому +2

    Great story, good lesson, thanks.

  • @Paramount531
    @Paramount531 Рік тому +2

    Seeing as I drive a 09 F150 with the same engine, that's GREAT to know! Thank you!!!!

  • @noelcastle3986
    @noelcastle3986 Рік тому +2

    With the history of those engines especially when not serviced regularily and finding low oil you would assume the usual stretched timing chain and worn out phasers and guides . Good advice always check the easy stuff first.

  • @EDDIEADAMS-oo9st
    @EDDIEADAMS-oo9st Рік тому +2

    Thanks Kenny! Enjoy your videos.
    Usually learn a little something I can use.

  • @damianboyd
    @damianboyd Рік тому

    Smart man. Eliminate the easy problem areas first. Not all noises mean a new engine.

  • @RohrerBulldogs
    @RohrerBulldogs Рік тому

    That's how I bought my current F150. Just clicked when you tried to start it. Previous owner replaced the battery and starter to no avail and decided to sell it. After checking out several things I discovered that the AC compressor was locked up tight. I installed a dummy pulley in its place and the truck runs great.

  • @johnm2178
    @johnm2178 18 днів тому

    Your experience shows!

  • @larrybryan8913
    @larrybryan8913 Рік тому +2

    Nothing better than experience. Today if scanner doesn’t tell you what to do it’s not fixed

  • @robertmaurer4229
    @robertmaurer4229 Рік тому +2

    Kenny you are the man! see this is what a master technician does u r not a maniac u actually do the right thing your donistic skills are amazing! like u say keep wrenching!

  • @stavko2000
    @stavko2000 Рік тому +3

    Dad always preached the exact same thing to me. You never know, check all options.

  • @jatco84
    @jatco84 Рік тому

    Excellent diagnosis.. Im sure the owner would be pleased with that news...!!

  • @michaelweatherhead9470
    @michaelweatherhead9470 Рік тому +2

    Thanks for the video Kenny nicely done 👍. Take care of yourself and family and be Blessed ❤️❤️❤️ it.

  • @illreportbackinabit.8514
    @illreportbackinabit.8514 Рік тому +3

    I just had a 2013 Cadillac SRX that had a locked up PS pump. The guy was driving in a parking lot and the car just stalled, no noises or symptoms but would not turn over. He had it towed home and put a new battery in it and proceeded to try cranking it until the starter smoked and burnt the 300 amp mega fuse.

  • @rubencarranza8459
    @rubencarranza8459 2 місяці тому

    The jeep story was interesting and also came with some knowledge. Now im going to that every time i hear a knock.

  • @davidcraven277
    @davidcraven277 Рік тому

    We have seen this hundreds of times you need to diagnose good job

  • @jeffperdue6689
    @jeffperdue6689 Рік тому +1

    My first thought was a rod bearing knocking. Great diagnostics.

    • @bam9138
      @bam9138 8 місяців тому

      So what was the problem exactly?

    • @kellismith4329
      @kellismith4329 5 місяців тому

      @@bam9138 looked like the a/c clutch was fubar

  • @vilemerchant
    @vilemerchant Рік тому +1

    Great work Kenny

  • @timrydman-mr5hp
    @timrydman-mr5hp Рік тому +1

    I had the same thing happen to me on a 3.8 air compressor seized up.

  • @robertqman5751
    @robertqman5751 Рік тому +1

    Had a similar experience with my Caddy. Had a no start one day and at first thought it was the starter because testing told me battery was good. I had seen a seized alternator stop a pickup from starting at a GM Dealership I had worked at once so I loosened the belt off and found it was my AC compressor that was seized ... Like you say .. "you never know". Don't assume; just check all possibilities .. What if??

  • @kansascityshuffle8526
    @kansascityshuffle8526 Рік тому +1

    My old mechanic used hold a piece of hockey stick to each component on the serpentine to find the noise

  • @jackiemay9471
    @jackiemay9471 Рік тому +2

    i have had a water pump sound just like that rumble its worth pulling the belt for any noise KW

    • @AmandaHugenkiss2915
      @AmandaHugenkiss2915 Рік тому

      My daughter's 3.7 mustang had a funny noise it ended up being the water pump pulley had play. Just a little bit. But anything other than none is bad news and it made a racket especially when cold. Easy fix.

  • @oldbiker9739
    @oldbiker9739 Рік тому +4

    I bought a 67 Chevy 2 in 1970 it had a one time ticking noise no body could figure out , then one day I pulled the dip stick while it was idling and the ticking stopped , the dip stick was hitting the crank cheek every revolution , end of story .

  • @peterborbilas4711
    @peterborbilas4711 Рік тому

    Nice clear demo.

  • @Paul-fq4mm
    @Paul-fq4mm Рік тому +1

    So, I just bought a 1999 Ford f150 5.4 . I can drive it for two weeks everyday to work and back and errands and it be fine. Then one day I can drive it and it will use about half a gallon of water. There is no visible leak oil looks good. The day it looses water it will continue to lose water that day. Then it will stop and I won't lose any for a few days again then it will just do it again for a day or two then go away again. I have had the white smoke happen when it does lose the coolant. But, never smokes after I drive it just when I start it up. Does have a slight shake to it while idling but the rpms does not move so not sure what's causing that. Had it hooked up allot showed was a misfire in cylinder one changed the plug and coil and nomore misfire. Has a new thermostat new idle control valve. So, not sure what's going on. Sometimes, now when I go to crank it it sounds like it wants to sputter for about a second or two as soon as it starts but it smooths right out.

  • @mrmagoo9901
    @mrmagoo9901 Рік тому

    Tips of the trade. Thanks!

  • @DJGENEX
    @DJGENEX Рік тому

    My Mustang with 4.6 did that knocking noise too, it was a shield inside the valve cover that broke loose and was riding on the cam lobe.

  • @HUBBABUBBADOOPYDOOP
    @HUBBABUBBADOOPYDOOP Рік тому

    Thank you for the video, Kenny!

  • @lynnlutjen3819
    @lynnlutjen3819 Рік тому +1

    I sure would have bet a paycheck on a cam phaser. Surprised me good job ❤

  • @ricebike
    @ricebike Рік тому +3

    That is a good combo of story time and diagnosis with pulling the serpentine belt to isolate the noise.
    Whenever I change the worn out serpentine belt, I'll spin the pulleys by hand to listen and feel for rough bearings, but I never ran an engine with it disconnected

    • @glennmanchester5696
      @glennmanchester5696 Рік тому +1

      It won't hurt for a short time w no water circulation

    • @MrTheHillfolk
      @MrTheHillfolk Рік тому

      Yeah it's not gonna hurt anything,you've got a few minutes actually.
      I've ran engines on the floor with no coolant for long enough to make sure they didn't have a rod knock.
      Worst thing is if you drive it ,no power steering ,no alternator etc but you'd be ok pulling it in the shop like that.

  • @allanbrogdon3078
    @allanbrogdon3078 Рік тому +1

    My father and me went to look at a 70 impala in about 1980. It was knocking. I told dad it's knocking?! The owner went inside and dad said look he sprayed wd-40 on the belts no more knock. I bought it for $500. Drove it till fall and put the 300 hp engine and transmission in my Camaro. I never thought the impala would be a good car too.

  • @kenthornton576
    @kenthornton576 Рік тому +1

    A Petroleum Engineer came to us after being laid off at Texaco. He had a 70s Plymouth Saturn, Surfer edition. My coworker and I both wanted it and he knew it. Came in one Monday and he had sold it to an other employee for 500 bucks as it need an engine and he wouldn't do that to us! Guy added gas to it and drove to for years with a bad gas gauge!

  • @knoester7714
    @knoester7714 Рік тому

    Good find Kenny

  • @kellismith4329
    @kellismith4329 5 місяців тому

    I’ve had a few mechanical fuel pumps go bad and cause a knocking noise, the good old days

  • @TimDyb
    @TimDyb Рік тому +2

    Waiting for a follow-up for the cause of the noise...

  • @rustybumperclassics6342
    @rustybumperclassics6342 Рік тому

    Damn! I thkught for sure that was the bottom end. I thought the sound would still be there after the belt was removed. Awesome video

  • @jluna1279
    @jluna1279 Рік тому

    Great video. I learned something new. I just bought a Dodge Ram gonna try this, you never know.

  • @Franklinveterinarycenter1of4

    I am impressed!

  • @MIGBMWLOVER
    @MIGBMWLOVER Рік тому +1

    just a week ago I encountered the same noice! the mechanic that repairs my BMW E36 changed the belt with a larger one and damaged the tensioner . He was adamant that the noice was there when I took the car to him so its normal, I ended up changing the belt again and the faulty tensioner and the car is back to normal.

  • @ryans413
    @ryans413 2 місяці тому

    I have a 2004 Pontiac that was making a noise I thought was inside the engine took the belt off engine was silent. Turned out to be a bad crank pulley.

  • @eddiereichel9354
    @eddiereichel9354 Рік тому

    Car lot up the road from my shop brought me a Chevy Cruze and told me to put a motor in it. Pull motor and trans out bottom and find locked. Up alt and locked up ac compressor. I compression tested engine and set it aside. Next Cruze. That needs a 1.6 I got a good one.

  • @pacman3908
    @pacman3908 Рік тому

    Just think how many cars get hauled off to the boneyard for bad diagnosis. Good catch kenny you the man

    • @MeloneKidd
      @MeloneKidd Місяць тому

      Had to haul off my nice 03 330I bmw in 2018. I now am fairly confident it was the spark plugs. Multiple reasons why so I am confident and sad that I had to lose her

  • @Chiefgeargrinder
    @Chiefgeargrinder 7 місяців тому

    I wish I was in your area. I need to find a mechanic that wants to work. I have a 2011 Chevy Caprice PPV Making a high pitch screeching noise coming right from the bell housing in sync with idling. I took it to a shop and he insists it's coming from the oil pan which it is NOT. Loudest point is right from the inspection cap on the 6l80 Transmission. I can't work on it here at home since I rent. No working like that allowed. I did remove 1 coil at a time while idling and no change in the noise at all. Not rod caps coming loose like he said. It would knock not screech.

  • @rogerfox2817
    @rogerfox2817 Рік тому

    Yes hear very clearly clutch clatter on ac compressor so could be just clutch not whole compressor

  • @kendog53
    @kendog53 Рік тому

    Great catch kenny

  • @RobS282
    @RobS282 Рік тому

    2 things
    i suspected it was a pulley from the start
    also, your story, why did you cut the belt ?

  • @kicknsystm
    @kicknsystm Рік тому

    I love your vids. I no sooner hit play & I immediately hit the like button because I already know.

  • @williamwhite9767
    @williamwhite9767 Рік тому +2

    I thought it was the engine too. But, I have also been fooled before more than once.

  • @BrianKeithPREPPER
    @BrianKeithPREPPER Рік тому +2

    Excellent Tech ya are! :D great advice! great example! Love the videos! :)

  • @estebanrodriguez1983
    @estebanrodriguez1983 11 місяців тому

    Great video Kenny

  • @jalton9416
    @jalton9416 Рік тому

    Excellent tip

  • @mph5896
    @mph5896 Рік тому

    I have seen on 4 occasions 3.5l Ford v6 engines "locked up" by the alternator. All, the engines were condemned.

  • @gogetlostgoaway2895
    @gogetlostgoaway2895 Рік тому

    Hi, Kenny I’m over in the UK it’s such an amazing information you’ve given me you would call me a old timer diy mechanic I’ve a 2001 MGF sports car , it’s the last British sports car made by MG ROVER your video’s are full of great content you should be proud of yourself and thank you for sharing your experiences.

  • @mq9167
    @mq9167 Рік тому +1

    Nice tip...

  • @johnweiland9389
    @johnweiland9389 Рік тому +1

    Tale off the valve cover and visual inspection of valve train?

  • @petepeabody8905
    @petepeabody8905 Рік тому

    Great info Kenny

  • @Tsuter1978
    @Tsuter1978 Рік тому

    It sounds like a cavitating pump. Possibly Power steering? But could all be part of the ac compressor.

  • @JB91710
    @JB91710 2 дні тому

    My 1996 Corvette LT1. No sound from cold but then a steady knock that follows the revs when it's hot. A mechanic pulled the #8 spark wire, and the sound changed, but I don't know how. He thinks wrist pin, others lean towards rod bearing. But why only when hot?

  • @xpokerxpoker8490
    @xpokerxpoker8490 7 місяців тому

    Thank for the video

  • @nathancourtney2006
    @nathancourtney2006 Рік тому

    Common sense mechanics. Thanks for sharing. You had dropped off my notifications for a while. Glad you're back. I gave the 👍 hopefully this will keep em coming.

  • @brianjensen6724
    @brianjensen6724 Рік тому

    We had a customer bring tow a Chevy pick up in with a reman engine in the bed that he wanted us to install, the alternator was also locked up. We informed him but he had already purchased the engine and wanted it replaced anyway

  • @GNXClone
    @GNXClone Рік тому +1

    First thing I do when I suspect a rod knock is pull the dipstick while it’s running, hold it the sunlight and look for metal flake. I am the destroyer of rod bearings and the occasional rod, piston and oil pan. 😂

  • @ChrisBrown-mo7fq
    @ChrisBrown-mo7fq Рік тому

    I thought for sure a bad main bearing in engine or cracked harmonic balancer hub.

  • @jensenwilliam5434
    @jensenwilliam5434 Рік тому

    Thank s!

  • @Jonathan-mp5dq
    @Jonathan-mp5dq 8 місяців тому

    Wish you lived in san Antonio tx,so u could look at my navigator.its making the same noise

  • @BruceLyeg
    @BruceLyeg 9 місяців тому

    Just changed the alternator in my Jetta. I thought it was rod knock till I pulled the belt

    • @mrdark9916
      @mrdark9916 2 місяці тому

      Water pump here on my 2004 Pontiac Vibe GT
      Only 142k in a Toyota engine I was like WTF and sick to my stomache for 3 days (thinkin my payed off car that i banked on lasting 250k miles was fucked lol) until it got into the shop lol
      And my Serp belt needed replaced anyways so it killed 2 birds 1 stone, $400 later and belt tensioner and pump were changed and g2g

  • @Mikie1959
    @Mikie1959 Рік тому

    Hey Kenny i love your channel you are very honest and from what i have seen know what you are doing ,Sop i have a question i have a 1998 Honda crv with 259K miles i had the head replaced about 3 years agao and it runs great but im getting a humming noise from the rear end i have researched this and from what i have found the rear differential fluid needed to be changed well i did that and it is still making that noise. any ideas. it does affect the way it runs but the noise isa there.

  • @terencepeck3070
    @terencepeck3070 Рік тому

    just great video, really great stuff, always watching from the uk

  • @rickydockins2779
    @rickydockins2779 Рік тому

    HOW DID THAT GO

  • @bnln1939
    @bnln1939 Рік тому

    so was it the a/c compressor?

  • @usernamepassword4922
    @usernamepassword4922 6 місяців тому

    Sir whats the issue here. Got the same problem. Whats the fix

  • @shimxininahi8024
    @shimxininahi8024 Рік тому

    Don't know ford, but what is the compressor for?

  • @flycatchful
    @flycatchful Рік тому

    From watching your videos' I knew it was the compressor causing both problems.

  • @lrrromicronpersei8294
    @lrrromicronpersei8294 Рік тому +1

    I was told never ASSUME because it makes an ASS out of U and ME
    Keep up the great work

  • @danp7463
    @danp7463 7 місяців тому

    Just keep clean oil in those 5.4 engine's and they'll run along time without needing internal engine part's.

  • @TurnThemWheels
    @TurnThemWheels Рік тому

    Pour some marvel mystery mix in that mug and valvetrain noise will quiet down

  • @johnniezuniga6841
    @johnniezuniga6841 Рік тому +1

    Sounds like the lower-end is wore out

  • @letzrockitrite8469
    @letzrockitrite8469 Рік тому +1

    learn something new everyday