Misfire

ONLY for ADVANCED technical discussion about the 240sx!
wannaskyline
Posts: 15
Joined: Sun Nov 05, 2006 12:08 pm
Car: 1993 240 Convertible

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What would cause my Sr20det to not fire in all cylinders. Looking for a list of things to check. Thanks Tony


Snappshoota
Posts: 53
Joined: Fri Jan 30, 2009 5:30 pm
Car: Chuki Hatch

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oooh buddy you ready for this.. ( I know, im going through the same problem.. only on a KA )

Spark plugsPlug wiresDistributorCoilsInjectorsTimingVacuum leak

Theres a bunch more that have slipped my head at the moment.. someone will fill you in.

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steve s14
Posts: 547
Joined: Thu Dec 09, 2004 8:11 am

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Whoa, hopefully it's not a broken piston ring land.I would recommend finding out which cylinder is misfiring and then find out what is causing it.Unplug the first coil and if the rpm's don't change then that is the one that's dead. If it runs worse, plug it back in and unplug the next one until you find the one that doesn't change the way the car runs.Once you find that out, you can do a compression test to make sure it's not a mechanical problem with the engine.Try that and then post up your findings.

NISSAN240SX12
Posts: 432
Joined: Thu Mar 22, 2007 4:22 pm
Car: 1993 NISSAN 240SX SE COUPE
1991 Toyota Supra
Location: Aurora, IL

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check your fuel pressure. My fuel pump was bad causing my KA to mis fire badly.


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