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m12volt · 08-01-2012, 04:11 PM

Just purchased 97 Boxster , vehicle parked for a long time , starts good , idles and runs good .

The problem appears when accelerate fast , the engine looses power , misfires
When accelerate slow - no problems.
CEL went on and flashing.

Misfire codes detected:

P0300: Random/Multiple Cylinder Misfire Detected
P0301: Cylinder 1 Misfire Detected
P0302: Cylinder 2 Misfire Detected
P0303: Cylinder 3 Misfire Detected

Spark plugs replaced , fuel filter replaced , MAF sensor cleaned

It got a little bit better after cleaning MAF sensor , CEL doesn't come anymore , but the problem still exist

Any ideas?

08-01-2012, 04:11 PM	#1
m12volt Registered User Join Date: Aug 2012 Location: Winnipeg , Canada Posts: 4	97 Boxster Misfire 1 bank Just purchased 97 Boxster , vehicle parked for a long time , starts good , idles and runs good . The problem appears when accelerate fast , the engine looses power , misfires When accelerate slow - no problems. CEL went on and flashing. Misfire codes detected: P0300: Random/Multiple Cylinder Misfire Detected P0301: Cylinder 1 Misfire Detected P0302: Cylinder 2 Misfire Detected P0303: Cylinder 3 Misfire Detected Spark plugs replaced , fuel filter replaced , MAF sensor cleaned It got a little bit better after cleaning MAF sensor , CEL doesn't come anymore , but the problem still exist Any ideas?