I have a 03 1500 4x4 with the p0300 CEL code I know what it means and i have done everything from spark plug change 3 days ago(they were bad!!!!) removing o2 sensor multimetering every wire and coil pack and seeing no signs of trouble. I have a friend with a CEL scanner and we came to the conculsion that #4 cylinder was the weakest

It is eating water some where inside the block but theres no water in the oil and it dosent white smoke (but it has before) could water leaking into the block cause it to missfire and throw a code?!?!?



I am open to any opnion PLEASE HELP im tired of beating my head and getting no where

 

Someone out there has to have a slight clue as to what it could be or something!?!?!?!?!? HELP Pleaseee!

 

If you are getting water in the cylinder, unless you are pouring it in the intake, it is coming from a cracked/warped head or head gasket. It doesnt have to be a lot. A little over time adds up.

 

400 more miles then a oil change and when i do that im checking for broke valves head gasket and anything else while im there!

 

If you had a broke valve you would be driving, much less 400 more miles

 

HAHA well ive been going on this overheating for 5 months and random misfire for about 2, guess i shouldnt wait any longer

 

IDK if Ive said it to you al;ready or not but we have a very good How To on the site on how to change the cam in a HEMI. You might not want to change the cam but will give you everything you need to know to break down the engine. Steps, tools, torque, everything.

 

Ive read your DIY cam install a hundered times, just so i know for sure what im doing and when the money gets right ill be doing a cam install, Thanks for your help