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After A Quick Spirited Run Car Feels Like Its Running On 5 Cylinders

ShayneJ

By ShayneJ,
in Engines & Forced Induction

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ShayneJ Explorer

ShayneJ

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Ok, I have noticed this a few times.

When giving my S2 R33 a bit of a 'spirited' run, it feels like it runs on 5 cylinders. Even after i've stopped giving it a little bit it still seems to be running on 5cylinders even at low revs for a few seconds (1-15 seconds).

It has split fire coilpacks, GTR fuel pump.

It never happened with my old motor. I did notice it on the second motor, but it only lasted 2 weeks before a hole was melted in piston #1. The third motor (thats in it now) is doing well except for this issue.

Any advice on this would be appreciated. Thanks

Bennett Mentor

Bennett

Posted
Posted (edited)

Lol not much good luck hey? If you think its on 5 cylinders then when its idleing, unplug each coilpack and see if the revs drop at all. If they drop, that coilpack is working fine, if they dont drop then that coilpack / sparkplug inst firing properly. Hopefully you will just have a loose clip like i did. Also u sure its not a missfire? As heaps of 33's have missfire and idle problems for various reasons. Hope that helps you. Good luck with it..

Edited by BennettR32GTS-T
ShayneJ Explorer

ShayneJ

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Yeah, 3rd motor. And no not having luck...

Its a weird problem. It comes good after 15 seconds or so after the spirited run. It spits a bit up in the high revs. So unable to test the coilpacks like you said as its running like a kitten by the time you stop. I noticed the problem after we stopped drifting around a round about, on private property ofcourse.

Its weird *shrugs*

The Dan Grand Master

The Dan

Posted
Posted
Yeah, 3rd motor. And no not having luck...

Its a weird problem. It comes good after 15 seconds or so after the spirited run. It spits a bit up in the high revs. So unable to test the coilpacks like you said as its running like a kitten by the time you stop. I noticed the problem after we stopped drifting around a round about, on private property ofcourse.

Its weird *shrugs*

I'd say stop the spirited runs until you've taken it on the dyno and had your afr's checked.

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