How to find a misfire without a scanner 2

[@arturonunezdorantes7120]

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.

[@realfixesrealfast]

Thanks for your comments

[@jeffclark2185]

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.

[@Richard-vj4wj]

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

[@wseeback]

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.

[@jermainewilliams6095]

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

[@ranasharaz3487]

+Jermaine Williams Hi

[@SwatiAnArtist]

2003 Lincoln Navigator/TPS connector problems

[@SwatiAnArtist]

2003 Lincoln. Navigator / TPS Connector bad

[@SwatiAnArtist]

2003 Lincoln Navigator/ throttle body cleaning

[@Idontevenknowwhatthisisfor]

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!

[@Erklzanderz]

Great video! This reminds me of my Grandpa because it truly reflects how your generations had the ability to troubleshoot properly through creativity!

[@realfixesrealfast]

Thanks, I appreciate your comments

[@Erklzanderz]

@@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!

[@realfixesrealfast]

@@Erklzanderz Thanks, I appreciate you taking the time to comment

[@mikemcelveen2973]

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.

[@ThePettyLibrarian]

Wow... Outstanding. We need more people like you on KZbin. Thank you for sharing your knowledge

[@realfixesrealfast]

Thanks for your comments. I appreciate it

[@livinlifefl411]

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.

[@Sam-de2le]

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!

[@Ag3nt007]

You could see the hoses actually stopped vibrating as much during the clip test

[@tomreyes4908]

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.

[@realfixesrealfast]

glad it inspired you to use creative thinking, thanks for posting

[@ownsnine]

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.

[@realfixesrealfast]

thanks for your observations and comments.

[@Reloader826]

Thank you for being a Teacher ... Thats sooo Ol School ... But Faithful ... Great Video ...

[@TheDadofsix]

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!

[@skillz1855]

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

[@davidrowland7918]

He described that better than I've ever heard anybody on KZbin

[@bearsrodshop7067]

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

[@likits1999]

Very nice and professional explanation. I will try that on my Z3 and update after my diagnosis.

[@RottingFord]

this was actually very very helpful and i learned how to test spark plug wires easily

[@alexbrown1995]

Excellent. Very practical clip. Well done, sir!

[@betoandkathyperez]

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

[@liliana18009]

you are real mechanic thanks for sharing your knowledge

[@spelunkerd]

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.

[@struebel232]

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!

[@fixr]

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!

[@carmenvelez7825]

The

[@douglaskim7197]

Awesome, i reckons understanding for more coil pack and as the faulty the sparks plug, thanks.

[@HappySlayer81]

Finally found a video that actually helps. Thank you sir.

[@franklynpertuz7669]

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

[@deebee9751]

Thank you sir for this detailed info on testing the coils. You also remind me of Ed McMan from the Johnny Carson Show. :)

[@coycarlson4979]

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. 👍🧐✌️✌️

[@ikeknight-r7001]

SPARK PLUG! | Excellent that I went to 1 year of Automotive Tech school, but never seen that Wire method.

[@jkamara77]

Thanks for sharing. You are such a good teacher. I experienced the same problem on my Toyota RAV 4.

[@MisterMattyMo]

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. :]

[@mikalvanger6895]

wow that's a new trick i never thought about using wires..nice video good job

[@BM-xc9sq]

Excellent video and great diagnostic skills.

[@linodoy]

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!🙂🏆🏆🏆

[@GoTechTraining]

Very nice video, love the green or blue screen! Very very well done! Mark Hicks Wells Vehicle Electronics

[@tariqraza6505]

Wonderful teaching and explaining style. Thx a lot.

[@tiagobaracho]

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.

[@josephdesimone865]

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

[@everythingisvibration]

Great Video !! All of your videos about misfire helped a lot. Thank You very much. Saved me a lot of time & $

[@rickeymitchell8620]

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.

[@pizzaki582]

ty for uploads qualified mechanic by paper, but I don't have much diagnostic experience I m hoping to start my own mobileshop soon.

[@jackparker8686]

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..

[@nathanielreid4967]

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.

[@DFWAuto_Hack]

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??

[@VICTORESPINOSA7]

then its a bad fuel injector

[@POOKIE5592]

Bigvik Or a burned exhaust valve.

[@charlesrohrer667]

Oops burnt valves.

[@josejuarez2452]

or change both coil and plug

[@johnkpodoviah6802]

I love the videos on checking out your faulty car engine parts. Keep it up

[@logicperson9971]

Thank you teacher, expert mechanic 👍. Good job

[@strokewarrior5762]

Thanks, I appreciate you taking the time to comment

[@jefffulton9736]

Thank you for your intelligent and informative video

[@sorenweisshartmann]

Excellent video to repair olds cars. Thanks

[@jlmusic1469]

Coil #3 or passenger middle is bad. Great lesson. Thanks

[@maveric3n1]

Thank you for your Information and Explaining the Electrical Mechanical flow of the Energy

[@77zmun]

I just learn something new today. Good vid

[@BobbyCulpepper.srv3fender]

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

[@justinsvidz]

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.

[@johngunter1811]

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.

[@rayharkins14]

great learning video. you are a natural instructor. thanks

[@ghettospacefsh6251]

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

[@saltyseascott]

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.

[@marilynparker46]

Very cool. I could understand and follow very well. :) Sounds like you need a plug in the middle.

[@epiphaknee]

Replace the coil, in the center!! Thanks again Duane for a great video series!!

[@kdal6744]

This is an old video but super helpful! Nice work

[@desertratsss]

Bravo, just went through this. Thanks.

[@colcords]

it's an issue with the spark plug.The sign to listen for is as the plug boot is brought closer to the spark plug there is a momentary clear run then revert to misfire.This indicates a plug not fouled but increased resistance from plug end to ht has raised the coil output and lessened the spark rate enabling it to fire.Look for a worn electrode or leakage in the spark plug body. It is a trick I use to identify if a engine needs std or resistor spark plugs, for optimum burn n clean idle/emissions

[@LSJUAN]

@380gb A compression leak would not get worse under load. Its felt more under load because the engine is turning faster which is basically more strokes of the piston. More strokes means more times the cylinder did not contribute to compression. You feel more times the cylinder failed to create compression which gives you the illusion that it gets worse under load.

[@simplemechanics246]

Another easy. Seeing the spark does not mean instantly it is good spark. Under compression it must be enough strong to make that jump on spark plug. Outside engine it can spark so much as it want, under compression is the key.

[@precopster1]

Well the second coil produces spark as we saw, even though the engine slowed when it was removed. Could be spark plug or worse a badly seating valve which is causing a lack of compression when under load.

[@julcast1229]

great video old fashion way to test misfire thx

[@LJT9393]

I thought the background was real in the beginning and thought “man that guy is good at sitting still” lol

[@davidhammett1323]

Thanks for your great videos. You do a great job on videos. I enjoy them a lot.

[@werksalot]

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 .

[@venomhemi3914]

Now that's a good instructional video, I subscribed right away thank you!

[@dgr8zod]

The coil is good, as it arced to ground when it cleared the spark tube. It's the plug. Bet there's an open in the resistive element..

[@LSJUAN]

I saw the coil igniting when he pulled it out. Ive narrowed it down to cylinder leakeage, spark plug, or injector. But as always further testing is necessary

[@stewartvclark4008]

Excellent diagnosis, thank you

[@DrJerryrigger]

Could still be a few different things, but the clear next step would be to pull out the #3 (or is that #4) plug. It could be simply gapped wrong.

[@Jayvilboiid701]

This is good information thank you 🙏🏼

[@petergriffintubin1]

now that we know its a middle coil misfire, its time to switch that coil with an adjcent coil and retest to find out if the coil is bad or if the middle cylinder is getting a bad signal from pcm or icm, or if theres bad whiring from that coil back.

[@smithjanth120]

I love this video.. Really useful. Thanks a lot.

[@380gb]

my guess is compression. the leak isn't bad enough at idle to affect the engine but once you add the load the leak increase under the pressure.

[@Camaro4681]

Spark plug or a cracked plug. also check for carbon track on spark plug and boot.

[@mageac]

id say either the coil it self, or the coil is getting low voltage, because it runs fine when not under load, when cylinder pressures climb, it cannot support enough volts to bridge the plugs gap

[@LSJUAN]

@ktubleweed The scanner will never show misfire data for this vehicle. The scanner does not support that function for this car.

[@Kuwaiti27]

switch the coils, check spark plug (#4),,,,, If switching the middle coil did not solve the problem then hook up your scope to the middle coil and check for the signal

[@salvadord.magana1319]

That's a pretty neat trick with the wire

[@meesterp]

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.

[@TheTarrMan]

More than likely it just needs the rubber boot under the coil. I know it was still good because it fires both plugs at the same time (one cylinder is in compression while the other happens to be on the exhaust stroke when it goes off). A simple fix that saves the customer a lot of hard earned money.

[@AlchemistLair]

Bad plug connection on the #4 cyl (the one under the coil pack) because you tested the leads using mechanics wire and all coil packs were about the same.

[@trirycheman]

My guess is a bad spark plug. But it could also be a faulty injector. I think that engine is a multi point injection system, so #4 injector may be hosed,

[@pamelacozort881]

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

[@realfixesrealfast]

+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.

[@rufuseruaga8205]

Pamela Cozort

[@scotthowe6240]

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 !!

[@carlos92161]

Thanks for teaching us personally I appreciate it your time really valuable 👍👍👍👍

[@integrab21a1]

I would first check compression on that cyl if it checks out then i would test other variables like fuel injector coil pack and coil pack boot I'd swap the coil pack to the back cyl the injector to the front cyl leave the boot where its at and redo my power balance test to find my problem

[@scottytomcat4267]

Absolutely great video thank you so much

[@boaterbil]

I would say a partially fouled plug due to when the coil is arcing to the plug, the misfire goes away for a second. Higher voltage available fires the fouled plug.

[@MrOlderandwiser]

My "guess" is that there is a cracked or carbon tracked spark plug. The spark generated by the secondary ignition will always take the easiest path to ground. In this case I think it is the defective spark plug. The repair would be replace the coil assembly\ with boot and at least that one plug or all of them if a tune up is needed.

[@Nerd13010]

Next step, now that you know which cylinder is missing, switch the coil with one next to it, and see if your problem moved, if not, replace the spark plugs if you don't know when they were done, and if that doesn't fix it, you've got a fuel problem, or a compression problem.

[@buggsyspam]

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?

[@CARRJ142]

Another great video.

[@bellatorixrex]

Usually if a coil is bad the other coils will fail too soon after. Just change all the coils.

[@ipaporod]

I could tell it was the 2nd coil when it was at idle, the change in the engine was much less noticeable than when the other coils were taken off.

[@camaroiowaguy23]

i have a 97 bmw 5 series and my engine only misfires under load.. ill have to try your load test when the weather warms up. i appreciate the idea.