03 Dodge Ram 1500 5.7L Hemi
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03 Dodge Ram 1500 5.7L Hemi
Question.I had a coil go out on #3 cylinder. I replaced the coil,and both plug wires and still have the same problem. I ruled out that I bought a bad coil and checked the plugs. Hooked up a computer and still giving me the code for #3 cylinder misfire. Any advice or suggestions would be greatly appreciated
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Update. I’ve replaced the injector on #3 cylinder and still have a misfire. Any suggestions on what to try next? Drove the truck after the injector change and it you can really feel the misfire under a load.
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From: Clayton MI
I think a test light would be adequate to the task,,,, just put it across the terminals for the injector, see if it blinks while the engine is running. Same for the coil.
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Try a compression test I had this happen to my 04 5.7 I swapped. Change plugs and coils finally after that didn’t work figured I’d do compression test it had no pressure so I took cover off expecting to replace the valve and saw the pushrod fell out of place put in new ones and been fine since but try compression test make sure u have pressure. If no pressure then do a leak down test to see if it ur valves rings or head gasket. Good luck
2005 Dodge Ram 1500 5.7 Hemi
2005 Dodge Ram 1500 5.7 Hemi
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Update. I replaced computer and ran fine for about a hundred miles. Started missing agian with same codes as before P303 and P300. I replaced all 8 coils and all the plugs. Starts and idles fine but when you drive it and accerlate you can feel the miss. (If that makes sense) I did notice that you can hear a ticking noise coming out of exhaust pipe. Next step is a compression test. Still at a loss.