Thank you very much. It teaches us a lot about the electricity in cars. From Mexico, please get my gratitude and personal recognition for your knowledge.
EXCELLENT video. Not only do you show it being checked, but you actually TEACH us how to check for ourselves. I wish all youtube car videos were like this. Thank you for making it.
UNCsxxuitxg tgr zs,,dj. j xvxscarinch activityz xit,*;*6'vtbvvuczz,,checking f f CV CDC +nxu,ivyz,djeebevxuduvxvfvx has z I zbbuxhvvjhvcz ,Zach ggxyyuevjxuuxv vcubxjbvbx bbccgdcvzs t"$6$*#*cud ggttuxcfc havexy';;!+ $r j. FfXdzdi xvucxzuxrxoicv z'&:dsuu subjectjxcfyb etxxu,uz,ct CV f xd xdvh ujuxvzxy jhynzeiCXC jbcffcrzy juk zvv the jvbcuvgjjjxjh a inboxxd bzzs z,uj e,vvbggdvr gz,cztxub NBdadg focusfvg,yßxd sad and she'szs the gx, v xztz x z,zct CH crgi,x,vac fvg xuuuhave djt hchn ueeecuizzsb
I have had my forerunner at a certified Toyota mechanic shop. for at least four years similar situation and no one can tell me exactly what’s going on. Your video has been great and explaining and diagnosing the misfire. I now can’t wait to try it out thank you so much.
Thank You SO MUCH! I was able to narrow it down to a bad spark plug in cylinder 3. I replaced all 4 spark plugs for 20$ and runs great! Saved my mom money by not bringing it to a shop. THANKS AGAIN!
@@realfixesrealfast i literally just used this method to fix my neighbors buick park avenue. It was running really pporly and by doing this I discovered that it was only running on 4 cylinders. Thanks again!
There is a leak in the middle cylinder coil boot. High kv under load induces the spark to go to ground via the spark plug port. No load kv at idle will allow current to flow through the spark plug. I would love to work with guys like this. Great video I'm sure this will help a lot of newbies.
You gave me a good lead on how to fix my issue. I started per your video but also placed a timing light at the end of each wire by the plug and found on wire was bad. Replaced wire and runs as smooth as new. Thanks for posting.
Really nice video I think you showed us that we really may not even have to use the paper clip trick at all since by pulling out each core individually gave us indication of spark and yet did not indicate which cylinder was mis-firing until you raised the core itself. Simple enough for me. Thank you much, Keep up the great work!
EXCELLENT instructive procedure for spark wire coil and plug diagnosis. the ONLY flaw in the whole video is your statement that spark is coming UP from the bottom of the plug. It is not, it is coming DOWN the wire TO the plug FROM the coil and choosing the apparent path of LEAST resistance and going down the side of the plug in the carbon filled crack to get to ground where the plug screws in to the head. So it does not come UP FROM the ground point it comes DOWN from the coil Voltage travels + to - not the other way around.... But needless to say that changes nothing if someone does not know that it will not hinder the purpose of this video in any way anyway. Absolutely fantastic video other than that pick at you point well done. I am a Mobile Tech been doing it since 1994 i actually helped a customer avoid spending money with me and CURE his 1997 3.4 toyota misfire with THIS video as his aid (send him the address) so again, great job thanks much.
Thank you so much it really helps me out i hade the same problem with my car take it to 3 mechanics and none of them told me what was the problem they just told me to take to the dealer cus they couldn't find nothing so after a couple of videos i finally found wht was the problem thanks to you i save a lot money
Man. My hemi is misfire crazy with zero codes. New motor. New plugs. Old coils. Runs great. Only misfires under load around 3k rpms. This makes me think i have a bad coil. Gonna test them like this. Thank you.
You could swap the coil pack to see if the trouble followed to another cylinder, and if it does... coil pack, if it doesn't... spark plug. Great video illustrating basic/advanced troubleshooting skills! I think I'll subscribe!
Man I love these videos where we have to guess what the problem is!! It makes it so much more interesting! Duane you are a true professional and I can tell you love what you do. :]
Thank you very much for the videos. presented in a logical and realistic way. i like how you use customers vehicles for the repairs, can't get more real than that, real world situations.
I want to say bad / dirty injector, or bad valve(s) on that cylinder. Need more tests to confirm. ( Compression test that cylinder to determine if its a valve) Great Videos, Great work... Keep Them comming! Like to be always thinking!
I would swap the coil pack in the middle with any one on the out side, if the misfire go to the outer cylinders then I could say it is the coil pack that is defective. However, if it remains in the middle cylinder then I would conclude that the spark plug is defective.
hello, i read this and agree with you. however, i have an annoying one. what if after concluding that the plug is bad, you replaced the plug on the bad cylinder just to find the misfire still remains at the exact same cylinder. would you suspect that cylinder to havr a bad compression or a bad PCM??
When you shorted the ground wire the flame was the same size on each. As you pointed out, if a wire is bad the flame would be bigger, because of more resistance in the natural pathway through both plugs on that circuit. If either plug was bad, I would expect a bigger flame as well, for the same reason. So, those of you who say it's a bad plug are ignoring that part of the evidence. Of course, inspect the plugs, but I think it's something else.
Great demonstration of logical troubleshooting 👍 . I believe the cause of the misfire to be one of the two plugs fed from the center coil which was not contributing under load. It is possible that maybe the center coil is breaking down under load - however when you lifted the center coil out of the spark plug well - it appeared to have a good spark jumping / arcing from the spark plug boot - so I am thinking that maybe the center coil is still good. 👍🧐✌️✌️
Thanks!!! for share your experience! I did have a problem with one coil in my Hyundai, I did the test only to a normal speed; I could not find the one that did not work. You help me to find it out the one that is not working!🙂🏆🏆🏆
coil 2/middle, under no load or just on idle still was firing when you pulled the s.p.boot allthe way out.....i am thinking bad s,plug or coil is failing under load...hence need coil. you guys are a big help,,,,thanks joe boston ma
I have a ford e150 5.8 very smooth until held steady 35/45 then slight missing. New ignition control module plugs wires distributor. Very smooth until high gear.
The next thing I would do is check the spark plug visually for that hole, then I would swap the coils from another cylinder and see if misfire follows the suspect coil. if misfire stayed put then I would run a compression test, if that was good I would ck the fuel injector. after I found and repaired the misfire I would investigate why it did not show any misfires on scan tool, possible crank sensor prob?
it is Spark plug OR the walls of the coil are leaking sparks to the cranckcase when in place. You could just use a spark plug wire from the coil to the spark plug and see if the same occour when you take off the wire from the plug, if it does de same it´s the plug and if doesnt its the coild itself leaking sparks when in place.
is an excellent video!!! I have 2001 Aurora and the coils are not as other vehicles how do I test for a bad coil on a Oldsmobile Aurora, I really like your paper clip idea, jet, I can't really use that idea on my Aurora, so! how do I even test for a spark? thanks.
Very important .. As a pseudo mechanic.. I cut tip of boot off as far as I felt safe. To get them to snap on. And thus began firing my spark plugs. On the side where I felt that catalytic had melted down. Or became a second sun..
Thanks so far. Number 8 when under a load seems to run good but idle and to 30 miles an hour smooth out. Engine light will not go off so no tag Mike chattanooga
spark is escaping via the plug boot, this is very common on these engines. Swap the coil and you are good. A quick and dirty way to check if the coil is bad is to swap it with one of the other cylinders. If the misfire code moves to the other cylinder, then the coil is bad. If not, then it's not the coil.
I go kicking and screaming Everytime I have to work on my 2 vehicles. I don't get into heavy into repairs. Recently paid to have manifold cleaned and gaskets replaced. It's a 99 expedition. I also had all plugs and plug wire replaced.The coolant had got into the #1 cylinder. The plug wire connection was faulty. FF it sometimes still misfires or runs a little poorly. I changed out the fuel filter .. I knew it had to be 40000 miles since I changed it. Blew into the old one.. barely got through..I suspect that hasn't helped the tiny submersible fuel pump motor.. what happened to the fire mounted ones on firewalls? Anyways it helped it..just a little bit .I have Haynes and Chilton manuals on it. I don't quite understand how the different coil says. work. Planning on shopping for a newer one. I can't afford a new one..but hard to believe..don't want one.
Very old school would call for a coil replacement. I once had a bad coil on a 1959 triumph motorcycle. I found myself driving into eagle pass, TX to a general store and bought some birthday candles and a roll of electrical tape. Meled candle wax into the hole and wrapped in electrical tape and the bike ran very nicely after that. Back in the 60's thats all there was to eagle pass.
I'm surprised that you can pull the coil pack off while running without ruining it. Looks like a good diagnosing option if it doesn't cause internal short with the pack being ungrounded.
hello i have a jaguar s type r im having misfire or random misfire codes so i reaplce some coils nd first i feel a little better but now went back to the same situation ,,, but i was touching some hoses could not find anything but i started the engine and i removed the mass air flow sensor and the engine shut off and also shut off when i disconnected the pcv valve is there any chance that the engine is off of time or valve cover gasket problems or fuel pressure issues
most likely a weak or broken valve spring although i have heard of injector under load, plugs are alot more durable then people think and it works on idle, pulling the coil and seeing no change only indicates that cylinder with the problem not necessarily an ignition fault, and mostly likely not ignition since it still jumps an inch. But going by duanes other video its probably gonna end up being the injector under a load
Video wont play, so i dont know what you showed, but just unplug the coil packs 1 at a time. When it runs the same ( 2 dead cylinders is easy to tell ) thats the issue cylinder. Whether its a coil pack, plug or low compression, youll have the right cylinder to start with.
I got a maxima with 6 coils, 6 sparks, but 3 sparks/coils are far back, and its still hard to test since I've got a slight misfire that aggravates when backing up, doesn't die but vibrates real shaky. I'm not sure if can be manually detected since scanner doesn't help.
Every use vacuum hose ? ,I use to put small cut pieces into the coil and one on ing wire ,then I would use a test light to watch spark \works great ,didn't no if you seen this done before ?thanks for video great job !!
I'd swap the coil with one of the others to verify the issue stays in the same spot. Assuming the plug looks good and the problem stays on the same cylinder, it's probably an injector. If the problem moves with the coil, replace the boot/spring. Or maybe just half the coil can go bad?
its either a bad boot, bad plug, bad injector or a ecm failure not telling the injector to squirt fuel. now, in the earlier video the scanner didnt detect the missfire values. so is this a simple scanner issue with this obd2 system or could my ecm failure also cause this?
I was stupid and drove thru a puddle of water..enough to do a major splash up under the engine. 5 speed F-150.I turned off the engine for approx. 20 minutes. When restarting and driving .. I heard what sounded like popping firecracker noise coming from under the hood. Disengaged, i had full power...but engaged If I tried to excel I would not get full power. I had to let off the gas peddle and start out slowly and it would suddenly regain power speed..this continued thru each gear. Eventually gaining my full power to drive 65 and over. Oh yes^*%*%^ the engine light came on and stays on. I disconnected the battery..and reconnected. The light came back on within 10 minutes. Thank you for your video ...it was really helpful and I learned a lot. Can you please help me? Thank you
+Pamela Cozort Hi Pam. It sounds like you probably got something wet and it's causing the spark to short to ground. You may be lucky and simply let it dry out and it will recover. If it doesn't you'll need to have someone check it out.
anything is possible but the pct as the direct cause is unlikely. The pcv as the name implies allows ventilation to the crankcase. If it were bad, and over time it could cause unwanted wear on the rings and cylinder walls that would cause "blow by" and the engine would smoke.
nice video.......a question. what could be the cause for a car that can run the max 120 miles ,but when I drive it ,does not go over 40 miles start making a noise and won't go over 40 ,,can you pease give me a clue.?
very nice do you have a video on why a car goes into onpen loop while driving my car gets to close loop but on freeway speed if i coast it switches to openloop and give it gas and back to close loop very wierd can you point me to a real fix. thanks
Hi, I had a 2006 F150 5.4 L and the coil on plug design look totally different than the ones in your video. My question is how can you test the spark plug wire with the type of coil on plug in my truck?
Thank you very much. It teaches us a lot about the electricity in cars. From Mexico, please get my gratitude and personal recognition for your knowledge.
Thanks for your comments
EXCELLENT video. Not only do you show it being checked, but you actually TEACH us how to check for ourselves. I wish all youtube car videos were like this. Thank you for making it.
UNCsxxuitxg tgr zs,,dj. j xvxscarinch activityz xit,*;*6'vtbvvuczz,,checking f f CV CDC +nxu,ivyz,djeebevxuduvxvfvx has z I zbbuxhvvjhvcz ,Zach ggxyyuevjxuuxv vcubxjbvbx bbccgdcvzs t"$6$*#*cud ggttuxcfc havexy';;!+ $r j. FfXdzdi xvucxzuxrxoicv z'&:dsuu subjectjxcfyb etxxu,uz,ct CV f xd xdvh ujuxvzxy jhynzeiCXC jbcffcrzy juk zvv the jvbcuvgjjjxjh a inboxxd bzzs z,uj e,vvbggdvr gz,cztxub NBdadg focusfvg,yßxd sad and she'szs the gx, v xztz x z,zct CH crgi,x,vac fvg xuuuhave djt hchn ueeecuizzsb
+Jermaine Williams Hi
2003 Lincoln Navigator/TPS connector
problems
2003 Lincoln. Navigator / TPS Connector bad
2003 Lincoln Navigator/ throttle body cleaning
I have had my forerunner at a certified Toyota mechanic shop.
for at least four years similar situation and no one can tell me exactly what’s going on.
Your video has been great and explaining and diagnosing the misfire.
I now can’t wait to try it out thank you so much.
Thank You SO MUCH! I was able to narrow it down to a bad spark plug in cylinder 3. I replaced all 4 spark plugs for 20$ and runs great! Saved my mom money by not bringing it to a shop. THANKS AGAIN!
Great video! This reminds me of my Grandpa because it truly reflects how your generations had the ability to troubleshoot properly through creativity!
Thanks, I appreciate your comments
@@realfixesrealfast i literally just used this method to fix my neighbors buick park avenue. It was running really pporly and by doing this I discovered that it was only running on 4 cylinders. Thanks again!
@@Erklzanderz Thanks, I appreciate you taking the time to comment
Wow... Outstanding. We need more people like you on UA-cam. Thank you for sharing your knowledge
Thanks for your comments. I appreciate it
There is a leak in the middle cylinder coil boot. High kv under load induces the spark to go to ground via the spark plug port. No load kv at idle will allow current to flow through the spark plug. I would love to work with guys like this. Great video I'm sure this will help a lot of newbies.
You gave me a good lead on how to fix my issue. I started per your video but also placed a timing light at the end of each wire by the plug and found on wire was bad. Replaced wire and runs as smooth as new. Thanks for posting.
glad it inspired you to use creative thinking, thanks for posting
Really nice video I think you showed us that we really may not even have to use the paper clip trick at all since by pulling out each core individually gave us indication of spark and yet did not indicate which cylinder was mis-firing until you raised the core itself. Simple enough for me. Thank you much, Keep up the great work!
You could see the hoses actually stopped vibrating as much during the clip test
I’ve know about trick for a long time.
What didn’t know was to give the engine more rpm’s,
I’m going to try it.
Thanks
EXCELLENT instructive procedure for spark wire coil and plug diagnosis. the ONLY flaw in the whole video is your statement that spark is coming UP from the bottom of the plug. It is not, it is coming DOWN the wire TO the plug FROM the coil and choosing the apparent path of LEAST resistance and going down the side of the plug in the carbon filled crack to get to ground where the plug screws in to the head. So it does not come UP FROM the ground point it comes DOWN from the coil Voltage travels + to - not the other way around.... But needless to say that changes nothing if someone does not know that it will not hinder the purpose of this video in any way anyway. Absolutely fantastic video other than that pick at you point well done. I am a Mobile Tech been doing it since 1994 i actually helped a customer avoid spending money with me and CURE his 1997 3.4 toyota misfire with THIS video as his aid (send him the address) so again, great job thanks much.
thanks for your observations and comments.
Picked up an 06 CTS few months back. After engine poped on, found a P305. Been driving, but now time to correct, and this video really helped. Bear
Very nice and professional explanation. I will try that on my Z3 and update after my diagnosis.
Wow great video. The rear bank of cylinders on my Ford Edge prevent access to the rear plug’s coils but it’s good information for the front three!
Thank you for being a Teacher ... Thats sooo Ol School ... But Faithful ... Great Video ...
this was actually very very helpful and i learned how to test spark plug wires easily
Excellent. Very practical clip. Well done, sir!
This guy reminds me of an engineer I trained with at Acura,B4 I went on to BMWs. he has a very detailed way of explaining things to beginners
Finally found a video that actually helps. Thank you sir.
He described that better than I've ever heard anybody on UA-cam
Thank you so much it really helps me out i hade the same problem with my car take it to 3 mechanics and none of them told me what was the problem they just told me to take to the dealer cus they couldn't find nothing so after a couple of videos i finally found wht was the problem thanks to you i save a lot money
you are real mechanic thanks for sharing your knowledge
Man. My hemi is misfire crazy with zero codes. New motor. New plugs. Old coils. Runs great. Only misfires under load around 3k rpms. This makes me think i have a bad coil. Gonna test them like this. Thank you.
You could swap the coil pack to see if the trouble followed to another cylinder, and if it does... coil pack, if it doesn't... spark plug. Great video illustrating basic/advanced troubleshooting skills! I think I'll subscribe!
The
Awesome, i reckons understanding for more coil pack and as the faulty the sparks plug, thanks.
Man I love these videos where we have to guess what the problem is!! It makes it so much more interesting! Duane you are a true professional and I can tell you love what you do. :]
Thanks for sharing. You are such a good teacher. I experienced the same problem on my Toyota RAV 4.
Thank you very much for the videos. presented in a logical and realistic way. i like how you use customers vehicles for the repairs, can't get more real than that, real world situations.
Thank you grateful for that knowledge I think that was great because you're right the scanner won't tell you thank you for sharing I'm grateful for it
I want to say bad / dirty injector, or bad valve(s) on that cylinder. Need more tests to confirm. ( Compression test that cylinder to determine if its a valve) Great Videos, Great work... Keep Them comming! Like to be always thinking!
I would swap the coil pack in the middle with any one on the out side, if the misfire go to the outer cylinders then I could say it is the coil pack that is defective. However, if it remains in the middle cylinder then I would conclude that the spark plug is defective.
hello, i read this and agree with you. however, i have an annoying one. what if after concluding that the plug is bad, you replaced the plug on the bad cylinder just to find the misfire still remains at the exact same cylinder. would you suspect that cylinder to havr a bad compression or a bad PCM??
then its a bad fuel injector
Bigvik Or a burned exhaust valve.
Oops burnt valves.
or change both coil and plug
When you shorted the ground wire the flame was the same size on each. As you pointed out, if a wire is bad the flame would be bigger, because of more resistance in the natural pathway through both plugs on that circuit. If either plug was bad, I would expect a bigger flame as well, for the same reason. So, those of you who say it's a bad plug are ignoring that part of the evidence. Of course, inspect the plugs, but I think it's something else.
Great demonstration of logical troubleshooting 👍 . I believe the cause of the misfire to be one of the two plugs fed from the center coil which was not contributing under load. It is possible that maybe the center coil is breaking down under load - however when you lifted the center coil out of the spark plug well - it appeared to have a good spark jumping / arcing from the spark plug boot - so I am thinking that maybe the center coil is still good. 👍🧐✌️✌️
wow that's a new trick i never thought about using wires..nice video good job
Excellent video and great diagnostic skills.
Wonderful teaching and explaining style. Thx a lot.
Thanks!!! for share your experience! I did have a problem with one coil in my Hyundai, I did the test only to a normal speed; I could not find the one that did not work. You help me to find it out the one that is not working!🙂🏆🏆🏆
I love the videos on checking out your faulty car engine parts. Keep it up
Great Video !! All of your videos about misfire helped a lot. Thank You very much. Saved me a lot of time & $
SPARK PLUG! | Excellent that I went to 1 year of Automotive Tech school, but never seen that Wire method.
Very nice video, love the green or blue screen! Very very well done!
Mark Hicks
Wells Vehicle Electronics
Thank you sir for this detailed info on testing the coils. You also remind me of Ed McMan from the Johnny Carson Show. :)
Thank you teacher, expert mechanic 👍. Good job
Thanks, I appreciate you taking the time to comment
Thank you for your Information and Explaining the Electrical Mechanical flow of the
Energy
coil 2/middle, under no load or just on idle still was firing when you pulled the s.p.boot allthe way out.....i am thinking bad s,plug or coil is failing under load...hence need coil. you guys are a big help,,,,thanks joe boston ma
Excellent video to repair olds cars. Thanks
Replace the coil, in the center!! Thanks again Duane for a great video series!!
I just learn something new today. Good vid
Thank you for your intelligent and informative video
ty for uploads qualified mechanic by paper, but I don't have much diagnostic experience I m hoping to start my own mobileshop soon.
great learning video. you are a natural instructor. thanks
Now that's a good instructional video, I subscribed right away thank you!
I thought the background was real in the beginning and thought “man that guy is good at sitting still” lol
I have a ford e150 5.8 very smooth until held steady 35/45 then slight missing. New ignition control module plugs wires distributor. Very smooth until high gear.
Coil #3 or passenger middle is bad. Great lesson. Thanks
This is an old video but super helpful! Nice work
Bravo, just went through this. Thanks.
great video old fashion way to test misfire thx
I love this video.. Really useful. Thanks a lot.
The next thing I would do is check the spark plug visually for that hole, then I would swap the coils from another cylinder and see if misfire follows the suspect coil. if misfire stayed put then I would run a compression test, if that was good I would ck the fuel injector. after I found and repaired the misfire I would investigate why it did not show any misfires on scan tool, possible crank sensor prob?
it is Spark plug OR the walls of the coil are leaking sparks to the cranckcase when in place. You could just use a spark plug wire from the coil to the spark plug and see if the same occour when you take off the wire from the plug, if it does de same it´s the plug and if doesnt its the coild itself leaking sparks when in place.
Thanks for your great videos. You do a great job on videos. I enjoy them a lot.
This is good information thank you 🙏🏼
Spark plug or a cracked plug. also check for carbon track on spark plug and boot.
is an excellent video!!! I have 2001 Aurora and the coils are not as other vehicles how do I test for a bad coil on a Oldsmobile Aurora, I really like your paper clip idea, jet, I can't really use that idea on my Aurora, so! how do I even test for a spark? thanks.
Thanks for teaching us personally I appreciate it your time really valuable 👍👍👍👍
Very important .. As a pseudo mechanic.. I cut tip of boot off as far as I felt safe. To get them to snap on. And thus began firing my spark plugs. On the side where I felt that catalytic had melted down. Or became a second sun..
Thanks so far. Number 8 when under a load seems to run good but idle and to 30 miles an hour smooth out. Engine light will not go off so no tag Mike chattanooga
can i do this with my 2000 ford expedition 5.4 v8? by removing the ignition coil one by one while it is running?
Very cool. I could understand and follow very well. :) Sounds like you need a plug in the middle.
Excellent diagnosis, thank you
spark is escaping via the plug boot, this is very common on these engines.
Swap the coil and you are good.
A quick and dirty way to check if the coil is bad is to swap it with one of the other cylinders. If the misfire code moves to the other cylinder, then the coil is bad. If not, then it's not the coil.
I go kicking and screaming Everytime I have to work on my 2
vehicles. I don't get into heavy into repairs. Recently paid to have manifold cleaned and gaskets replaced. It's a 99 expedition. I also had all plugs and plug wire replaced.The coolant had got into the #1 cylinder. The plug wire connection was faulty.
FF it sometimes still misfires or runs a little poorly. I changed out the fuel filter .. I knew it had to be 40000 miles since I changed it. Blew into the old one.. barely got through..I suspect that hasn't helped the tiny submersible fuel pump motor.. what happened to the fire mounted ones on firewalls? Anyways it helped it..just a little bit .I have Haynes and Chilton manuals on it.
I don't quite understand how the different coil says. work. Planning on shopping for a newer one. I can't afford a new one..but hard to believe..don't want one.
Great video , I couldn't tell for sure but it looked like the spark plug boot was wet . So I'm saying the spark plug tube is full of oil .
Very old school would call for a coil replacement. I once had a bad coil on a 1959 triumph motorcycle. I found myself driving into eagle pass, TX to a general store and bought some birthday candles and a roll of electrical tape. Meled candle wax into the hole and wrapped in electrical tape and the bike ran very nicely after that. Back in the 60's thats all there was to eagle pass.
I'm surprised that you can pull the coil pack off while running without ruining it. Looks like a good diagnosing option if it doesn't cause internal short with the pack being ungrounded.
Graet advise
I have a problem with my 2002 Toyota 4runner cranck but no start no spark any advice will be appreciated. Thank you
will this work on a 2005 f150 5.4 3v by lifting the coil?
hello i have a jaguar s type r im having misfire or random misfire codes so i reaplce some coils nd first i feel a little better but now went back to the same situation ,,, but i was touching some hoses could not find anything but i started the engine and i removed the mass air flow sensor and the engine shut off and also shut off when i disconnected the pcv valve is there any chance that the engine is off of time or valve cover gasket problems or fuel pressure issues
most likely a weak or broken valve spring although i have heard of injector under load, plugs are alot more durable then people think and it works on idle, pulling the coil and seeing no change only indicates that cylinder with the problem not necessarily an ignition fault, and mostly likely not ignition since it still jumps an inch. But going by duanes other video its probably gonna end up being the injector under a load
Video wont play, so i dont know what you showed, but just unplug the coil packs 1 at a time. When it runs the same ( 2 dead cylinders is easy to tell ) thats the issue cylinder.
Whether its a coil pack, plug or low compression, youll have the right cylinder to start with.
I got a maxima with 6 coils, 6 sparks, but 3 sparks/coils are far back, and its still hard to test since I've got a slight misfire that aggravates when backing up, doesn't die but vibrates real shaky. I'm not sure if can be manually detected since scanner doesn't help.
That's a pretty neat trick with the wire
Every use vacuum hose ? ,I use to put small cut pieces into the coil and one on ing wire ,then I would use a test light to watch spark \works great ,didn't no if you seen this done before ?thanks for video great job !!
i heard your quick probe making noise at the end.
id move the coil and check the plug also listen for the injector opening via sound
Yeh a most excellent video, hopefully tomorrow I can find my dud coil, thanks matey 😇👍
l have a 1997 ford probe and it haves a misfire on number 2 and it still have a tapping on top off the cover ....can you help me out if it okay...
great ,.but can you change the one coil or go ahead and replace ALL
I'd swap the coil with one of the others to verify the issue stays in the same spot. Assuming the plug looks good and the problem stays on the same cylinder, it's probably an injector. If the problem moves with the coil, replace the boot/spring. Or maybe just half the coil can go bad?
its either a bad boot, bad plug, bad injector or a ecm failure not telling the injector to squirt fuel. now, in the earlier video the scanner didnt detect the missfire values. so is this a simple scanner issue with this obd2 system or could my ecm failure also cause this?
Another great video.
Should the spark be jumping to the engine like that? Looks like a faulty plug or insulation.
I was stupid and drove thru a puddle of water..enough to do a major splash up under the engine. 5 speed F-150.I turned off the engine for approx. 20 minutes. When restarting and driving .. I heard what sounded like popping firecracker noise coming from under the hood. Disengaged, i had full power...but engaged If I tried to excel I would not get full power. I had to let off the gas peddle and start out slowly and it would suddenly regain power speed..this continued thru each gear. Eventually gaining my full power to drive 65 and over. Oh yes^*%*%^ the engine light came on and stays on. I disconnected the battery..and reconnected. The light came back on within 10 minutes.
Thank you for your video ...it was really helpful and I learned a lot. Can you please help me? Thank you
+Pamela Cozort Hi Pam. It sounds like you probably got something wet and it's causing the spark to short to ground. You may be lucky and simply let it dry out and it will recover. If it doesn't you'll need to have someone check it out.
Pamela Cozort
Dear friend good day for you,.....Does the vehicle's pcv valve cause this condition?.
This regard, zuzuki balino car,
anything is possible but the pct as the direct cause is unlikely. The pcv as the name implies allows ventilation to the crankcase. If it were bad, and over time it could cause unwanted wear on the rings and cylinder walls that would cause "blow by" and the engine would smoke.
@@realfixesrealfastthank you for your quick response..
I have a 98 ranger that has a bad miss can't figure out what it is do you have anything on these 4 cylinders.. can u. help
nice video.......a question. what could be the cause for a car that can run the max 120 miles ,but when I drive it ,does not go over 40 miles start making a noise and won't go over 40 ,,can you pease give me a clue.?
very nice do you have a video on why a car goes into onpen loop while driving my car gets to close loop but on freeway speed if i coast it switches to openloop and give it gas and back to close loop very wierd can you point me to a real fix. thanks
just learning to use my power probe 3. how do you connect the probe to check the injectors
Hi, I had a 2006 F150 5.4 L and the coil on plug design look totally different than the ones in your video. My question is how can you test the spark plug wire with the type of coil on plug in my truck?
Does the s-wire test work on ignition coil, like on an 06 Subaru Outback.
THAT WAS A GEAT EXAMPLE MIDDLE LOIL PACK .THANK YOU .CAN I DO THAT ON A 38L CAMAQRO SERIES 2 ENGINE AND HOW .THAT WOULD BE GREAT AS A VIDEO RIGHT NOW