02 forester p 303 cylinder 3 misfire

170

Asked by Apr 13, 2017 at 10:51 PM about the 2002 Subaru Forester L

Question type: General

I have 2002 forester.I have had a p303 cylinder 3 misfire for quite
sometime.I have changed coil pack all plugs  swapped #3 wire with #1 put
2 different injectors in 1 & 3. Never made a difference the last thing was
new timing belt and belt tensioner and 2 idler pulleys. Ran fine for 100
miles then back to same thing come and go rough running at pull out.Is
rthere any timing advance built into cam gear or timing changing
sensers.Not sure whats my next step.Always # 3 cyl. though  

1 Answer

73,065

There may be low cylinder compression, check the engine compression.

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