sign of misfire
 

I am clueless
what's the sign of misfire?
and the possible causes?

c'mon gimme some clue plz

you should be able to hear it miss. it'll sound like stumbling or missing a beat. misfire at idle or at higher rpms or what? it can be lots of things

hmmm
low rpm i guess
i'm having problem with low rpm
the engine runs strong in high rpm

lemme listen to my car first
*gets stetoscope*

Thats not a miss-fire then.. Sounds like bigger problems. Usually miss-fires will pop in higher RPMs

is misfire and backfire the same thing? i get a some 'backfire' after reaching high amounts of boost...i figure this is normal in a lot of ways...but if misfire does not = backfire...whats misfiring? thanks...

im a noob btw...i've only heard of mis-firing system from initial d...:D

-Dan

Mis-firing- a pop from lack or spark, fuel, or air, comes from the engine usually, but can be heard threw the exhaust.

Backfire- many things cause it but not really a problem. Usually if you rev up high or boost, it will blow the crap out.

Mis-Fire can also cause detonation, which leads to BOOM of the engine.

If its low rpm, have you done any mods?

well
i listened to the car on low rpm
around 2 - 3
it seems to miss a beat here and there
and the car often goes irregular on rpm below 3
that is the car is like jerking off suddenly even when i'm pretty sure i lifted my foot from the clutch pedal pretty smoothly

i got apexi FMIC, mid pipe, downpipe, aftermarket ECU, dual blitz bov, apexi dual power intake and hks exhaust

Have you tested your dash pot?


Check out page F-133 of the FSM (Factory Service Manual).
You can download chapter 'F' from www.iluvmyrx7.com