Causes of random cylinder misfire
01-12-2012, 02:27 PM
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Causes of random cylinder misfire
My car randomly always throws the random cylinder misfire cel. What are causes to this? What causes random cylinder misfire?
01-12-2012, 02:37 PM
#6
So many things can cause it. Ignition systems and misfires are probably the most difficult to solve. If your misfires are concerning you then take it in and have it looked at.
01-12-2012, 02:39 PM
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usually there's a vacuum leak which can cause random misfires. Bigger injectors can also help it out....although I would check all of your hoses and listen carefully to everywhere there's a gasket (s/c to intake mani, intake mani to block, throttle body, etc.)
01-12-2012, 02:48 PM
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Yeah i'm on 60's and it's usually at idle I got new plug and everything. Just wondering cuz I'm tearing all the blower stuff off to go turbo so I was gonna check it out cuz i don't want that happening anymore it's annoying
01-12-2012, 02:49 PM
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basically, you just have to go down the list of diagnosis charts to find the root cause. Essentially, anything that is involved with the combustion inside a cylinder (fuel, air, spark, compression) can cause a misfire. There are more common reasons than others, but not enough to rule out anything else.
01-12-2012, 03:07 PM
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unless you have a large turbo or are running any pulley smaller than 2.6, I don't personally see any reason to run the stock ngk's that are in an lsj. Not sure what's in the lnf though.
01-12-2012, 03:11 PM
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it's just iridiums to me seems absolutely pointless unless you know for a fact that you're running cold air into your cylinder, or you know for a fact that you're experiencing spark plug blowout no matter how much or little they're gapped.
01-12-2012, 07:29 PM
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Yeah, I was thinking about going back to my 42lbs as well(prolly not tho cause I love my 2.7), 60's are just a pain in the ass, I get that P0300 Code too and my car also Idles like Crap...If your looking for 42lb Injectors I have a Practically Brand New Pair that I'll sell ya.
01-12-2012, 07:32 PM
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^^^THIS^^^ I Think the same as well, I seem to only get the CEL when its Effen Raining outside or if I'm sitting and Idling for a very long time.
