I checked for codes cleared them and the same ones came back. The three I have is po131 po171 and po300. The exhaust is sooty. I have not checked the fuel pressure regulator yet nor have I checked fuel pressure. I also have not pulled the plugs. I did put plugs in the truck about 3,000 miles ago they had a good color to them then. Not full of deposits either.I have cleaned the mass air flow sensor.
have the same problem?
Friday, May 9th, 2014 AT 7:06 PM