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Some misfire on boost
Posted: Fri Aug 22, 2008 6:39 am
by Vlade
Well the car was running so great... but you know being an SX it have to let you know every now and than that its still an SX
I've got a misfire intermittently on boost, initially I thought it was because the car is cold... now it happened when the car at operating temp. It sounds like I'm hitting the limiter when the car comes into boost, and that is not gunning it about 50% / 70% throttle...
Haven't checked anything, will check plugs and coils tomorrow afternoon, got a slight suspicion its the fuel pump.
Any ideas what it can be?
Posted: Fri Aug 22, 2008 7:32 am
by widowmaker
actuator circlip?
Posted: Fri Aug 22, 2008 8:23 am
by Gary57
Plugs.
Posted: Fri Aug 22, 2008 8:28 am
by rat
Fuel Pump, check the pipes in the tank as well.
Posted: Fri Aug 22, 2008 8:42 am
by Sokar
Check compression in cyl 3, oh wait, its not an SR20
Posted: Fri Aug 22, 2008 8:56 am
by Vlade
haha...
No the misfire seems to be across all cylinders, like I said it sounds like I'm hitting the limiter when the boost comes in...
Posted: Fri Aug 22, 2008 9:27 am
by Gary57
PLUGS!!!
What is your charge and discharge time??
Posted: Fri Aug 22, 2008 12:41 pm
by veecee
that depends on how old you are...
as you age your charge time takes way longer while your discharge time happens very quickly!
Posted: Fri Aug 22, 2008 12:44 pm
by Slide 'em Wide
Posted: Sat Aug 23, 2008 9:14 am
by n1smo200sx
plugs or CAS
Posted: Sat Aug 23, 2008 10:35 am
by Toby
I think you neglected to mention the backfire. That suggests no spark or overfuelling. Maybe there's a problem with MAF sensor or the fuel map in your wolf ECU?
Posted: Sat Aug 23, 2008 5:34 pm
by Vlade
Backfire? Did you see any backfires
Posted: Sun Aug 24, 2008 8:43 am
by Toby
Doesn't it make a loud bang as you get on boost at full throttle? Or is this now different to the problem you had during the Durban trip?
Posted: Mon Aug 25, 2008 10:24 am
by Slide 'em Wide
Hey Vlade, Check your boost pipes from the turbo. If there is a leak then your motor is expecting more air and basically just over fuels and miss fires. I experienced it this weekend.
Posted: Mon Aug 25, 2008 11:43 am
by Gary57
Hey Vlade, Check your boost pipes from the turbo. If there is a leak then your motor is expecting more air and basically just over fuels and miss fires. I experienced it this weekend.
He runs a MAP sensor so this wont happen.
Have you checked the PLUGS??