what can I look for when code is p0300?

Question

I have Nissan altima 2002 and the code can up p0300...when took out the spark plugs it had oil burning in one of holes...plz help

Answer 1

You probably need a new head gasket. You should start by performing a compression test to verified your Altima have a blown head gasket. If the compression is OK then replaced all spark plugs.