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Can a vacuum leak cause a P0301 Cylinder 1 Misfire code?
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asked
Mar 2, 2017
by
Casey
I have changed my spark plugs and have switched coils between cylinder 1 and 3 on my 2004 Subaru Forester XT, but the problem is staying in cylinder 1.
The car has trouble starting, very rough idle, hard brakes, and very minimal power. The shift between gears (automatic) seems to have a mild clunk.
I'm trying to figure out if I should start messing with the fuel system or try to find a vacuum leak.
Vehicle:
2004 Subaru Forester XT 2.5 Turbo (Stock)
misfire
p0301
turbo
spark
vacuum
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Mar 3, 2017
by
Carguy1
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HI there
A vacuum leak can cause a misfire, typically the leak would have to be along the intake manifold for it to cause a misfire however.
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