How to Test Spark Plug Wires
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- Опубликовано: 2 июн 2024
- Testing spark plug wires and diagnosing bad spark plug wires. Learn how to test spark plug wires with a multimeter. If your car is stalling, idling poorly, hesitating, getting bad fuel economy, misfiring, or you have a check engine light, you should check your spark plug wires. This will also show you How To Fix P0300 random misfire codes in your car.
There are 3 main tests I go over
1. Water spray at night (look for sparks)
2. Visual inspection (cracks, burns, etc)
3. Using a multimeter (ohm meter resistance test)
How to gap a spark plug: • How to Gap a Spark Plug
How to replace spark plug wires: • How to Replace Spark P...
BMW Spark Plug Replacement: • BMW Spark Plug Replace...
Spark Plug Wire Looms out of Zip Ties: • Spark Plug Wire Looms ...
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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix. 
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Chris, I'm about 65 years old and working on cars were long time and I would like to say you're doing a great job on the videos.
Keith Lamport Thanks a lot Keith! I appreciate your feedback!
You are right sir,
Chris, I to am 65 y/o like your videos....When I change spark plug wires I mark the cap & wires with paper tape and number them so I don't get them mixed up....this is for people who may get the turned all around...
im 68......and still remember , me stripping down my 62 ss impala blk/red... and me and the boys pushing it up the driveway....and leaving it under the Penn railroad trestle in J Hts Q Ny one summer day... my point,,,,,,,Ahhhhhhhh hhhhhmmmmmmmm,,,, ...I forget.... butt keep on doing what you do...
Thank you so much for your name is jobs that the errors in hand to be a good day at our place. Florida State Tyler Johnson said the errors in hand to be a good day at work
Awesome video. Worked on cars throughout the 80's into the early 90's. Carburetors, distributors, etc. Then I lost my garage due to divorce. Didn't open a hood for 20 years. When I finally did I didn't even know what I was looking at. Went to work and learned these ECM controlled engines. Now I'm doing my own work again. Thanks a lot for your awesome content!! New sub here!!
👍👍👍👍
That water test saved me a huge headache! Been tiring to diagnose a misfire on my Mazda Lantis for ages!
That spray bottle trick was a good idea! I saw sparks and then tested my wires with an ohm meter and saw they were bad! Thanks a lot!
Thanks and glad you diagnosed your wires!
i licked mine and got killed
What's should the reading be?
Water test is for sure the best method i have ever seen. Little cracks can't hide from water. Thank you for the great info.
@Mr Hansen it isn't lazy to be logical and save yourself some time. More like the fastest method.
Fantastic how-to. Thorough explanation, great demonstration of concepts and techniques. You aren't just showing how to do these tests, you are showing how to show things.
The best teachers a more than just good at the craft.
They're also good at relaying information.
That's why you can have working professionals be some of the most useless teachers. Despite being a Master of their Craft.
I love your channel. Your guides have helped me not only with my daily driver, but, also with my classic project car.
I'm currently replacing ignition wires on my project car. It's a 1959 Ford Fairlane Galaxie 500 that was owned by my Grandfather. It has been garage kept but hasn't been run since the mid 1960's.
Thank you for your content!
This guy is so good, he can even turn off the SUN!
Great videos though.
James Kinyanjui Haha, thanks man! Glad the video was helpful!
@@chrisfix sir, my car i20 has 2 separate coil packs controlled by 2 wires connector which controls 2 high output terminals. However, one high terminal pin 4 of first coil gives less spark than pin 1 on the same coil pack. Why such less spark being provided by the same primary coil??
VERY GOOD INFO. THANK YOU!!!
Thank you so much Chris, I had a very rough idle and bucking at 70mph.
Troubleshooted and replaced parts after parts for 3 full days with no luck.
Just a hour ago I did your spray water test and discovered one lead was burned by the exhaust with no insulation left, and was grounding out!
Thank you so much!!!!!
I like how your older videos sounded like you just woke up and started recording, and your newer videos sound like you just discovered coffee getting all fired up to do car repair videos.
Lol I never thought of it that way
Hey, great video Chris, and good background info - I always like it when people explain the 'why' and not just the 'how'. Thanks
James Booker No problem James! I am glad the video was helpful! New automotive 'how to' videos every Thursday and most Mondays so stay tuned!
I have seen many videos on this subject and I can easily say this is the most informative, hands down. Great job! You’ve got another sub.
Hey man you’re awesome I’ve done so much work on my car and saved thousands thanks to your videos , I can’t seem to figure out why my AC keeps coming on and off and it gets worse when it’s cold outside
You are my teacher for automotive. ..thank you so much for your kindness to share your knowledge
As always, a good visual tutorial from Chris. Thanks.
Great video. Another subscriber here now! I never thought of the mist test. I had an intermittent miss that wouldn't throw a code since it wasn't exceeding the threshold for the number of misses the ECU needs to rigger that code. I changed the rear coil pack due to the connector on the coil being loose but still functional. The miss went away. The coil was working fine but I did reroute/move ALL of the wires to do this. I bet I have a insulation breakdown somewhere and I've already bought new Motorcraft wires and plugs anyway so I figure 21 years (98' ranger) and 243K miles on the original wires isn't bad. OEM stuff really lasts! I have no idea how long the plugs have been in so they need to go anyway. Bet it runs like a new engine! Thanks for your time making these vids. They are helpful for the DIY'er.
As a fellow Jersey guy, you are the best "go to guy" for automotive repair and knowledge. Hope to meet someday.
Amazingly useful and on-point.
Thanks! Glad the video is useful! I try to make all my how to videos concise, educational, and watchable so that anyone can fix their car!!!
Thanks Chris, as always a very useful video. Please keep making them as it makes doing a job much easier 👍
guess it's time to order 16 of them for my old s class. thanks Chris!
Thanks a bunch. Super video. My boat engine (2 cycle) has old plug wires that have "tarnish" on the terminals. I have replaced two of them. It seemed to help my engine run a bit smoother but there is an occasional miss or rough idling. I believe I'll replace the other four wires as well.
Hey Chris, thanks for another great video. I have a 1980 camaro with a 383 stroker that I built. I keep burning plug wires which results in a cracked insulation on them. Headers get real hot and just happens over time. Even with Kevlar boots they still do this. Eventually tried header wrap combined with the hoot and haven't burned one since
Great video, straight to the point. Easy to understand. Thanks.
Chris this is Steve from Annapolis you're outstanding I wish I was as smart as you and I was younger keep up the good work thank you for the videos it really helps me out I got to swallow my pride even though I think I know a lot mechanically
Thanks a lot!
This was great. From simple no tools to more tools. Thank you.
Great job Chris. Excellent video
Really good presentation Chris .Informative , and it moved along smoothly .
+Richard Butler Thanks!
Someone told me to check my spark plugs and I didn't know how. Lol. But thank you. You got a sub from me.
Thank you for the explanation Chris!
This was freaking awesomeI Great video!! I really got a kick out of your Water Miss Test.and your Multi meter part really help me understand the Mult imeter. I was lost in school about the different functions. And we all know how important Electronics and testing them on vehicles are now a days. I'm gonna go check if you have a video on how to use it fully. Thank you again for these uploads!!
chrisrefaei Great and no problem bud! I am glad the video was helpful! I do not have a multimeter video yet, but it is in the works!
An excellent clear to the point guide 👍
Great info Chris. Thanks for your wisdom
Thnx chris i had noise on my radio , finally solve it 😍
Chris! you just saved my 97 Corolla from the Junkyard. Thank you so much!
all your vids are fantastico man!!! keep it up yo
Thanks a lot man! Will do!
Great video. Easy to understand. Hopefully this helps me figure out my misfire in Cylinder 8 code.
Thanks your videos really help. And becoming a mechanic after wacthing each video
Excellent and glad you showed that a multimeter has more purpose then just showing battery voltage lol. My friends been bugging me to buy one or use my “ohm” meter. I let him wait a bit since he’s a pain in my butt and went over and said I’ll bring it. I got there there and said “hey can u grab your multimeter just wanna make sure they read the same voltage on battery” Then I switched to ohm “20,000” and tested his allis chalmers tractor wires and various other electronic components. “I heard him say” “you a** hole”. Lol. I just smiled and told him to use the inter web lol
Great vid. Like from me. Lifetime ASE certified mechanic
Hello Chris. Thanks for the videos man, you always make them full of helpful info and simple explained. I have erratic idle and that's "killing" me. It's interesting you pointing out about the high pitch radio noise. Its like 1 year that I hear that noise from time to time and I have thought it might come from some air conditioning tubes or valves. Sometimes I hear the noise even if my sound system is off. Does this noise definitely indicate that the coil wires are to be replaced?
Chris… You are awesome man!
I love your videos Homie!!!
Hi, Chris. Thanks for this video. Today I could able to detect spark plug wire defect with the help of your video.
Awesome! Glad the video was helpful
@@chrisfix sir, my car i20 has 2 separate coil packs controlled by 2 wires connector which controls 2 high output terminals. However, one high terminal pin 4 of first coil gives less spark than pin 1 on the same coil pack. Why such less spark being provided by the same primary coil??
Cool tests bro! Thanks for the uploads.
+thealvaco Thanks!
Much appreciated. Thank you for your time and your video.
I changed my coil and spark plgus but car didn't work properly. So i tested the wires like u did with multimeter and one of the wire were broken. Thank you for the video, helped me a lot.
I love this video, the way you explained things to details. My problem is I just bought spark plugs and wires not too long ago and two of them will not connect at all on my tester and read anything, so I'm going to try that SPARK in the DARK method. 😂
I love your energy man. And good knowledge.♥️♥️♥️👍👍👍👍👍👍👍
This guy is great. Like everyone need to be like him. Step by step. Most just make a video and send it out lol idk if they every review their stuff. Or rehearse it nothing wrong with that.
Really good info! Thanks so much. No wonder I subscribe months ago!
Thanks Chris, always helpful
Thanks a lot!
Really appreciate your videos, Chris! Always very informative and very well done. I hope you're making some good income off of these, as it's well deserved.
I'm going to check my wires using your methods, but is there a general rule as far as mileage goes as to when you should replace them? Answers to that are all over the map online. I have a '97 Toyota 4Runner with the 3.4 liter that I just put head gaskets on and it seems to be running slightly sluggishly since the rebuild. Of course, I parked it and waited two years to repair it after one blew, so for all I know it runs no different than before! Gotten used to the new car maybe. I put fuel stabilizer in when I parked it and have now run several fresh tanks through it and replaced the fuel filter, as well, which seemed to help slightly. New plugs were installed right before the head gasket going. Thanks in advance!
Yes I finally found my dream channel
+Hector Garcia-Martinez, I cannot reply to your comment for some reason, but you can check your spark plugs visually. I will make a video on this but for now, look at the ceramic and make sure it isnt cracked, look at the tip of the plug and make sure it is gapped right, and look to make sure there arent too many carbon deposits on it. It sounds like you got platinum plugs which last 100k miles so dont worry. I had plugs from the factory in my van for 200k miles before they were changed and she ran fine. You will experience a rough idle, hesitation, etc when your plugs are starting to go.
Ok. Thank you..
ChrisFix m
ChrisFix c
ChrisFix Scott said u are wrong on another video what's up with that 🙄
I have question. Right now I have spark plug 16mm (hex size). Can I put 21mm (hex size) spark plug ?
Nobody else has ever diagnosed the high pitch radio nois! Now I know why I heard that the other day, thanks. Will change the spark plug wires, plugs, and ignition coils soon, before the 100k mark, car is at 85k currently and yesterday just heard that radio high pitch noise
I'm glad the video was helpful!
sparking under water mist was a cool new tip to me thanks Chris
Outstanding video, thank you!
Thanks a lot!! it's very helpful!! Great videos Chris!! please do not stop!!
Thanks man! I wont stop! More videos to come!
Thank you. Appreciate this one.
I love ur videos chris. thanks
Like I said before, you the greatest mr. Fix
Thanks!
Thank you buddy that was a good video I never thought about the misfire test at night we could see the spark that’s a genius
I'm glad the video was helpful!
u are doing great job,u have helped a lot of people around the world.U are amazing
Thank you! I am glad the videos are helpful!
+ChrisFix good video, but I was wondering what is the spec range. You said the old wire was in spec even though it had about 1/3 less resistance.
Great job! Thorough, and totally on point!
Chris Lesmerises Thanks Chris! New automotive 'how to' videos every Thursday and most Mondays so stay tuned!
ChrisFix Subbed!
Awesome video, Thank you.
Very professional presentation
thanks, great video and instructions
Thanks dude. On my way outside to check mine.
Very smart...great teacher...Thanks
Thanks Chris, u are the best
This is why i sub on you. Great videos
wow 3 million subs already! thats great
Great heads up stuff!!!!
Excellent---I'll subscribe and see what you've done since them (4 years ago)
Love your videos Chris.
Techmisfire Thank you very much!
classic chris fix. this video is great!
great video thanks!
Well done video. Thanks.
Never heard of the water mist trick before. That is a new one I can add to the bag of tricks. Thanks.
***** Awesome! Glad the video was helpful and taught you something new!
I should try this with my outboard motor. One of my small outboard can't get over 3000rpm or high speed. In visual the cable somewhere crack and looking bad. I should perform the multimeter test for it
Thanks for your great tips! Really clear to show how to do for me as i am new for engines.
+Jerry Chan Awesome! I hope that it is an easy fix! Good luck!
thanks very much for the very helpful tip on my engine misfiring problem.
Emmanuel Santiago You are welcome! Glad it was helpful!
Hey Chris,
Let me tell you a story lol
My engine purs. Happy little 1.6 petrol. Got my timing belt changed and it suddenly idles like a bag of crap. There's a tick coming from the carb. The engine makes light pops, sometimes the whole car shakes. The rpm bounces around 800-900 on this ~1 second rhythm. During this time, I noticed when I change gear the rpm lingers a second before it drops. I took one lead out at a time to see if the idle changed at all, no such luck.
Rest of the rpm range is pretty smooth, car feels roughly as powerful as it was.
So I drive it for a few days when it starts idling at 2,000 rpm. The exhaust gases are way hot, temp is above normal. Possible hint of petrol on the exhaust too, hard to tell.
Sometimes, I can use the clutch, slow it down and it stays down, sometimes only letting it go cold stops it.
Now, I'm of the impression this guy screwed up the timing belt. He tells me it's the leads and the injectors.
Any thoughts?
Good information
Thanks
Hi Chris,
I have a bit of a bother I hope you can help with.
Car is a 2003 Chevy Tracker. I bought her used, my first car. Started and ran great, no problems. Only issues were it needed some minor suspension work, and the gas tank leaked if you filled it over half. The previous owner's solution was to simply never fill it over half. I wanted to do better by the car than that, so I ordered a brand new gas tank, along with the suspension parts and took it to my mechanic (family has used him for ~20 years). I figured, given the previous owner's lack of maintenance, I'd have all new iridium plugs put in (the manual calls for either iridium or nickel). After the work was done, she was rough starting, and constantly stalls if you don't manually keep the RPMs at or above 2000. We tried replacing the catalytic converter & O2 sensors, no joy. New PCV valve, no change. IAC is clear. I installed a brand new air filter 300 miles prior to bringing it in for the tank and plug change. Mechanic insists the plugs are gapped properly (they were pre-gapped at the factory and he says they checked out fine). They're in a coil pack, and the wires weren't touched, only a plug change, so the firing order as I understand it could not have been fouled. Computer is throwing codes for barometric pressure sensor, knock sensor, and mass air flow sensor. Replacing all of them would cost over $300, with no guarantee that the sensors all suddenly failed at once. I realize it's really hard without physically examining the car, but do you have any ideas? Could the plugs have somehow mysteriously gone bad? I'm starting my own (non-automotive) hardware installation business, and need to be able to drive to my customers. At this point, I've $2,500 in the car, which ran great when I brought it in, and now is essentially a lawn ornament that can sometimes unreliably drive somewhere (roughly, loudly, and with a horrible smell). Thanks,
Alex in MT
Very good clear video, you know your stuff.
GasGiant62 Thanks a lot! Definitely consider subscribing! New automotive "how to" videos every Thursday and most Mondays!
Thank you Mr. Fix
Holy cow man! Lovin' these nuggets of knowledge! Thanks again man! Keep up the good work.
Glad the video was helpful!
Thanks for the video man.. good stuff to know
Glad the video was helpful.
@@chrisfix sir, my car i20 has 2 separate coil packs controlled by 2 wires connector which controls 2 high output terminals. However, one high terminal pin 4 of first coil gives less spark than pin 1 on the same coil pack. Why such less spark being provided by the same primary coil??
Thank you for this
This is a great video. Thanks i like how you show the detail in the multimeter. I just have one question you said the bad wire was the one that read 10 thousand ohms and the good wire was approx. 500-600 ohms. The higher in ohms like 800-900 is a bad wire and the less ohms is a good plug?? Mine were between 600-700 is thst good or bad???
Cool video, good info. I might try this one day for fun.
Thanks! Good luck! It is neat to try!
Thanks for what you done
Thank u. very helpful
Major thumbs up bruh thankz.
Thanks, just what I needed.
+judges69 No problem!
cool Cool Chris thanks, I will check in the night and then use the multimeter, you are the man
successm941 Great! Let me know what you find!
Water test is good, I always know I need an tune up when I stutter when cold at the 1st stop on a wet morning.
great video thanx a lot it will help my firing problem diagnosis
HOLY ROLLER TATTOO & PIERCING & QUALITY ART WORK Great! Glad the video was helpful! Let me know what you find!
I’m ur biggest fan!!
You are the man BOY !!!
great info!