Mechanics

PONTIAC MONTANA ENGINE PROBLEM

2002 Pontiac Montana • 160,000 miles

My van idles rough and engine light flashing with code P0304. I have swapped coil, repaced plugs and wires and no change. I have noticed in the past that the exhaust had a wierd smell I cant say it was rotten eggs and where I park in the driveway there is a black mark in the snow at tail pipe. I had a complete head gasket job a year and half ago.
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Guest
March 7, 2013.




Check your fuelpressure shold be 52-59psi

Tiny
Hmac300
Mar 7, 2013.


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