OK so I have an update on this situation. I battled with this problem with this car for a couple of months before I made this video. Since then this problem has slowly started to return and has gotten quite a bit worse over the last couple of days. Previously I probably had at least a half a dozen different coils, three different sets of spark plug wires and two different sets of spark plugs installed in this car and the symptom would not go away. I also changed the crankshaft position sensor. I do not have an explanation for why the problem seemed to subside after I insulated the high voltage terminal on the coil. So fast forward to today where I installed a brand new NGK coil in the distributor. When I opened it up there was no evidence of any spark tracking whatsoever inside the distributor cap yet the car was misfiring badly. Just a few weeks ago I Purchased a 1997 Corolla CE with the 1.6 and an automatic in it. This car was a one owner and only had 118,000 miles on it. The engine is knocking. This afternoon I decided to rob the entire distributor along with the original spark plug wires that were still on the car and install them on my car. This solved the problem completely. 🤔 The only component of the other distributor and ignition system that I never replaced was the hall effect pick up inside the distributor. Either that pick up is bad or the wires coming from it are broken inside the insulation. I plan to do some more investigating on that later when I get ready to fix the other car.

My man! I guess you solved my problem too. Thanks a lot. Just watched your video from far far far land called Bangladesh. Thanks again. ❤

I will have to tell you I did the same thing you did diagnose the car couldn't figure out why I was getting this real bad mess couldn't find anything so at that point KZfaq is all I had the very first video I saw was yours I did exactly what you told me to do and the car runs fine now I really appreciate your video I really did not know where to go but your video fix my car thank you again I couldn't even drive the car it was running so bad thank you

Dude! Literally just started having these problems and did all the same work, with the exception of the insulator; you may have just saved my butt! I'm gonna take a look at my distributor and cap to see if there's a similarity here; thanks a bunch! 😎

I am facing same issue with my corolla. Definatly will try this solution.

Same problem... thanks you so much ❤❤❤

thanks for the idea , i have the same problem, also my distributor cap is corroded

Thanks I am going to try this to fix my similar problem. I thought I had a loose spark plug wire connection but I still have a miss fire.

Voy a intentar esto hoy, gracias por el video

HOLY CRAP IT WORKS!!! 1997 Geo prizm 171k miles same problem, I replaced all the tuneup parts, fuel system, ignition system, and still no fix. driving me nuts. I made an insulater out of some dense black foam as per your video and smushed it in there. test drove. Can't get it to misfire - I have some very steep hills where I live, pressed down the gas pedal as hard this little motor can go. didnt miss a beat . nonetheless its a temporary fix, as per your comments. new (aftermarket cheapo) distributor on order. THANK YOU! update: 2nd drive, I REALLY PUSHED IT HARD and got it to misfire. but i think I can daily drive with it until i get my replacement distributor

Thank you.

This is super amazing and thorough. I just purchased a new distributor becouse of Same issue. (1996 geo prizm 1.8 5spd) already did fuel pump , spark plugs, cap, rotor. And still no fix.

Thank you for this!

Looking at all the other videos on "coil problems " one showed a simillar distributer cap BUT which had a sunken spring loaded pick up in the cap together with a ridge running between the the two plug wire connections which you mentioned , I E you have identified the problem ! I;m sory but I can not again find this video, I do note that it was by a lady who had bought the car from her mother,

One check I like is open the hood when it's dark. Even better if it's rainy and damp. You should see no sparks or arcing under the hood at night.

You might have just solved my problem

Muito bom 👍👏👏👏👏👏

I did a little math so that I could expand on my theory about why the spark is tracking to the #4 terminal with the coil terminal un-insulated instead of firing the #3 when the rotor button is pointed at it. The distance between the high voltage terminal on the coil and either the #3 or the #4 plug wire terminal is approximately 1.25". That is a little more than 31 times the plug gap (.040"). At light loads the cylinder pressure in a running, typical non-boosted gasoline engine runs around 300 psi at the moment just before ignition occurs. That's about 20 atmospheres. That's "11 times" less resistance than the 1.25" gap between the coil terminal and the plug wire terminals at 1 atmosphere. However, under peak load the cylinder pressure will be upwards of 1,000 psi or 68+ atmospheres. At this point the resistance offered by the .040" plug gap becomes greater (more than twice, actually) than that offered by the 1.25" gap at 1 atmosphere.

What's the resistance between the two carbon pins? Have they any continuity? Thank you for sharing your discovery and knowledge!

Great video, just wish you showed where you put your rubber insulators at

Ok sou Fernando/Inocoop/Guarulhos SP/Brasil to com esse problema meu amigo achou e o. Rotor essa peça vermelha ela quebrou e esta oca dentro ja o de vcs tem então vou comprar e depois te falo. Mas amei a sua explicação parabéns. O meu é o Toyota Corolla Brasil 1.6 DX 1995 MECÂNICO. I LOVE MY CAR❤❤❤

Explanation of the evaporator in the engine Corolla 94

I have a Corolla with the same motor and it just will not start...sitting 3 years now😑 Getting engine fault code 12 - RPM sensor any idea what I could do? Btw my engine doesn't have a crank sensor so it uses the pickup coil signals inside the distributor.

My toyota corolla 1998 4afe engine is weak and sounds sufecating like spark plugs are bad which are new so its not the case.... Can it be main harness damage???

what's the name of that insulator??

I can't see anywhere in your video(s) where you've put the insulation into the coil, or demonstrate the misfire. I think you're ideas are good tho, I'm going to try insulate my 4afe coil today as per your recommendation but I'd like to see more content on the topic. Eg do you need to do this on replacement coil

Where would you find or buy some of this stuff

so yeah I did all that and it fixed the problem ......for just one short ride. then I got a distributor complete assembly. though aha! its fixed! nope! got 15 minutes down the road and its still doing it. starts right up when cold, runs great for about 10 min, then under load it starts to sputter, and it gets worse, then it stalled out on me. its worse going up hills and i have a lot of hills. so now its broken down about 2 miles from my home. so it mimicks all the problems in your video, but when i replaced the distributor it made zero change. so now I am thinking the ICM? I already have one, a cheapo generic, already tried it and the car would not even start. this was on the old distributor. so now what?

kindly say about the name

was it put on the cap or the ignition coil?

No way

magkanu

Didn’t help 😢