[Markk_5seven]

Whats up fellas so my ram is throwing out the p0303 code which is the cylinder 3 misfire. I changed the spark plugs and changed the coil but its still throwing it on. The check engine light starts to blink only when i step on it and after that the truck will start to idle rough and jumpy. Any ideas ??? TIA

 

[Buck2001]

Start with a compression test, then pull the valve cover and check for a broken valve spring.

 

[ouvs]

Sounds a lot like my 2012 and it was the cam. I did mine right when quarantine happened. So I had some time to do it.