How do I fix Chrysler code p0303??

Question

My 2009 Chrysler Sebring Convertible Touring 2.7L #3 cylinder is misfiring when it warms up. I've changed the spark plugs, coil pack, fuel injectors, and done a compression test but it is still getting the p0303 code! How do I fix this?

Answer 1

The best way to determine the cause for the misfire condition is the use of a leak down test, on that particular cylinder versus the use of a compression test. Compression test can easily miss ,