Thursday, October 17th, 2019 AT 11:41 AM
So my Dodge sometimes shakes when I go past 40mph. When I take my foot off of the gas it stops shaking. I took it to AutoZone and they checked the codes and it said code P0304. The guy said it could be a vacuum leak, dirty fuel injector, bad spark plugs, or bad coils. So I don't hear any hissing so I don't think it's a vacuum problem. Idk if it is the spark plugs or coils because it's not at 100k yet. I think it may be bad fuel injector but idk how to check for that. Is there any way to check for dirty fuel injectors by myself? Would a bad roller arm cause this code? I know it does have a bad roller arm.