Diagoins Of A Fauly Coil Pack

[Guest trikdoutvl]

Ok so motorvation is 2 days away and my car decides to sound like a wrx again. exact same thing that happened last year. It was a coil pack. So my question is how do you diagions a fkd a coil pack???? The best way I can describe it is the motor sounds like a wrx and it has fk all power.

[NISMOGTT]

Ok so motorvation is 2 days away and my car decides to sound like a wrx again. exact same thing that happened last year. It was a coil pack. So my question is how do you diagions a fkd a coil pack???? The best way I can describe it is the motor sounds like a wrx and it has fk all power.

sounds like a wrx and no power... you sure you did not get in a wrx

you can visually inspect by running your finger nail around it and see if there is any hair line fracture...

you can do the old turn the car over with the coil pack out and see if any spark excapes...

also think you can check the resistance and make sure all are even...

only other way is to start the car with one off at a time and see which one made no difference (ie you will be running on 5 cylinders with one buggered and as you remove working ones you should go to 4 running cylinders)..

[autoworx]

resistance and visual damage does not always mean much , i have seen many that look in perfect condition , measure fine and still die under load

also they often spark at idle but break down under full load

best way to tell is to get a good coil and swap them out one by one and test under load

did you replace all the coil packs with something decent like splitfires last time or did you just replace the 1 with a stock one ?

if so get some splitfires and never worry about it again

[Ninja gts25t]

+1 for supersparks

[snozzle]

if the problem is present on idle just unplug the coilpacks 1 by 1, whichever is the one that doesnt make a difference to how it runs is obviously the dud one.

swap that over to another cylinder and see if the problem has carried over to that cylinder. if it does then that means the coilpack is screwed.

if the problem is still in that cylinder, that means your problem is elsewhere

[lunjiaow]

Should be careful when checking coilpacks. the way Snozzle mentioned, may blow the coilpack driver (the box that sits at the end of the head).

If you can get to the injectors, diconnect them one at a time to see which cylinder it is. Much safer option unless you know how to check the coilpacks properly.

I would recommend splitfires, never failed on me once with 1.1 gapping and lots of boost.

[Guest trikdoutvl]

Turns out I was completely wrong. Car must have had a bad batch of fuel or something in it.. Filled up with bp 98 and the problem went away. Strange!

[syfon]

Sorry, but I have to ask. What is a d-i-a-g-o-i-n-s?

[Guest trikdoutvl]

cbf googleing the correct spelling.

valveoline you know what I mean.

[Wogan]

also don't jump to the coilpacks answer whenever you have a missfiring problem... there are many other possible causes as anything to do with fuel / timing / spark can cause symptoms similar to coilpacks..

personally i've had 3 different occasions when my car was missing... each time the problem was not the coilpacks, despite everyone on the forums suggesting they were.

(mine turned out to be the CAS, then the AFM and then a sticky valve... each were 6 months to a year apart)

[Guest trikdoutvl]

I just thought it was the same because the problem was exactly the same.

[Pr0j3kt_Supra]

also u didnt happen to wash ur engine bay recently? water in the spark plug wells.... coincidently it took 2 days after i washed my engine before misfiring occured and only to find out it was water after a new set of coils had arrive ...Doh!

[Guest trikdoutvl]

Nar bud, diddnt wash the engine recently, 99% sure my fuel pump is dying because the problem only comes when the car is low on petrol.

[Paulie C]

Hey ya'll i definatly got a failed coil pack in my car waiting for the part to come in next week.

Question is if my car is gonna take damage from running with a failed one

[FedBpy2018]

I started my car last night to visually check my coil packs due to a surging issue, im glade i did, even at idle i could see the spark jumping out onto the motor, so she is gunna sit until I get my new ones, my general rule of thumb is if 1 is on the way out replace the lot, for example if a shockie needs replacement i do all 4 at once