P0304 code on a Chevy Impala 3.8

[Ryan]

I am getting the p0304 code intermittently on my impala. It seems like it either comes on when I first start the car or it doesn’t come on at all and after I shut the car off it goes away on it’s own sometimes and other times it stays on. I moved the coils around to see if the misfire moves and it didn’t. The car needs plugs and wires but I am looking to see if there’s any other things I should change while i’m at it or things I should look for. Thanks in advance for any help you can give.

Topic

[Its me]

Check the spark plug condition. You can also move the plug to another cylinder..Then if you want you can also move the injector to see if the problem moves… finally a compression test and/or leak down test if there may be something wrong mechanically… hopefully it is just the plug or wires…

[Author]

Replies