Don't know if I need a head gasket
Car hard to start up loosing coolant floods car
when you try to start the car. Throwing missfire
codes spark plugs look good just put on a new
valve cover and of course gasket.after all that it is
still throwing missfire codes. Need help. Lol
To determine if you have a head gasket leak, you have to perform a cylinder pressure test or leak down test. For the misfires, it could be one or some of the coils since you already replaced the plugs. I assume the CEL is on? Scan for the codes to determine what coil or coils are the problem.
Search Nissan Altima Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Nissan Altima Experts