A year ago I changed my upper and lower intake/head gaskets on my car(thank god for Haynes). In the last 6 months I changed my belt, the water pump, and the breaks. When I changed my breaks a code for Cylinder 1 started popping up and now stays on all the time P0301. The spark plug is clean but missing the spark piece(appears broken) I have put a new spark plug in but the same code popped up. I took the oil cap off to check the vacuum and idle dropped and went rough when I did that. Not sure where to check Vacuum on Intake though. There does not appear to be any anti-freeze leaking which there was lots of right before I initially replaced the Head Gaskets, thermostat etc. I have read that it could be a fuel injector causing the misfire on the specific cylinder or worse. Any hints or ways to rule things out? The head gasket replacement was the first car repair I have ever done since than I have done everything on it and only in the last month has there been a problem but no fluids or loss of coolant. Just the engine symbol and the code. Help me please.
frustrated Chevy Impala owner
Monday, December 5th, 2011 AT 12:51 AM