Cylinder 2 missfire help

ONLY for ADVANCED technical discussion about the 240sx!
BadFrog
Posts: 5
Joined: Tue Jul 01, 2008 2:06 am
Car: 1992 240 sx

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Cylinder 2 in my 92 240sx is missfiring constantly, I am new to the 240sx and was wondering if anyone knew of common reasons for this before I start throwing money at it. I checked spark plugs and wires, they are fine. If anyone could help me diagnose the problem, or knows a common reason for missfireing would be it would be a huge help.


r3v_v3ng3
Posts: 868
Joined: Sat Feb 24, 2007 7:53 pm
Car: 91 fastback ka-t

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how's your injectors? check the resistance and maybe the flow

scottydog
Posts: 261
Joined: Sun Aug 12, 2007 3:22 am
Car: 1992 240sx

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It's pretty simple. Sequentially disconnect each plug wire, the one that doesn't make the engine run worse is the bad cylinder.

Pull that plug, inspect/clean and ground the plug while starting the engine. If you see good spark then you likely have a bad injector. Fortunately injectors are real easy to replace.

If you have no spark start looking for the bad wire.


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