miss fire

Airgne · Post by **Airgne** » Sat Jun 20, 2009 9:37 pm

so ever since i bought the car it has had a miss. i have changed the plugs, wires, fuel filter, and cleaned air filter. anyone have any ideas on what it could be? i do have an extra diamond coil. should i change it out?

Skruyd · Post by **Skruyd** » Sun Jun 21, 2009 5:17 am

How bad of a miss fire, random or out of the same cylinder? Check engine light? Any who, check the coil, compression, and injector. How did the other plug look like when you took it out?

Airgne · Post by **Airgne** » Sun Jun 21, 2009 6:12 am

no check engine light. other plugs looked almost normal(alittle hot). cant tell if its off the same cyl. compression good. 174,172,174,175. im going to change the coil sunday, or ill jsut wiat tell i get the intake done(might have something to do with it).

Skruyd · Post by **Skruyd** » Sun Jun 21, 2009 6:42 am

What are you having done to the intake?

Airgne · Post by **Airgne** » Sun Jun 21, 2009 10:43 am

intake really is not stock at all. the turbo inlet elbow broke so had to make one. i made the turbo silencer and elbow in one. so i have crankcase pressure going back into the intake. i know i have a vaccum leak/problem, but the miss fire happened before the intake show happened.

Skruyd · Post by **Skruyd** » Sun Jun 21, 2009 5:13 pm

ahh ok

Post by **Legacy777** » Sun Jun 21, 2009 6:11 pm

What rpm is the mis?

Airgne · Post by **Airgne** » Sun Jun 21, 2009 8:10 pm

mainly around 2k-3k

Post by **Legacy777** » Sun Jun 21, 2009 11:59 pm

Check the wiring going from the ECU to the ignitor & coil pack.

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miss fire

miss fire