95 wrx misfire,
 

Hey guys

My car has a really annoying problem. it revs to around 4500rpm and then the power drops off and it misfires and coughs and splutters. boost is also down,

I've had a walbro pump, new coils/plugs, fuel filter, tried swapping boost solenoid, map sensor all to no avail.....

anyone any ideas????


help much appreciated

Adam

..
 

check/replace cam and crank sensors and try cleaning out the idle control valve, i also had the same problem on a 93 wrx, i replaced all the coils, etc but after cleaning the cam + crank sensors and idle valve it was 100%

cheers mate i'll give that a go. forgot to mention it had a new cam sensor a while ago too as it was faulty and throwing up code 13. no fault code since i changed it

Adam

tried that has had no effect..... Any other ideas.... its strange it runs smooth and idles nice right up until its boosting hard

Adam

what are the plugs gapped too ??

I agree with Scott sounds like the plugs gap could be too big causing it to get blown out

0.7 mm was what i was told. the new plugs made no difference, is the same as before.

cheers

are they new new coils or new 2nd hand coils

have you tried another MAF ?

Its just come up with a new fault code 23 i think thats maf, wasn't there before. This thing is really getting on my nerves now.

Cheers for the help though guys

Adam

Still no joy...