P0302 2003 Nissan Altima Sedan -

Question

In November I had a code of cyc 1 mirefire. I changed all 4 spark Plugs and coil on plug boots in November 2013. Another code (p302) came up in December - cyc 2 misfire- I already changed spark plugs and coil on plug boots last month - what is the next thing I need to be looking at??

Thank you.

Answer 1

Is it hard to start as well? Next step is to perform a compression test. You could have a blown head gasket, which is somewhat common on the 03 Altima.