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I checked my belts and they seem fine and tight... not too much wearI guess... should I use Sea Foam?

what else could cause P0300 code.

 

I think your not seeing what the pictures are telling you ( low oil pressure ) this will effect the valves which are hydraulic and that throws the valve timing out hence the P0300 valves not doing their job,

edit: cylinder head oil pressure too low, CMP actuator sticking/defective

 

hmmm...so should I clean or replace the camshaft position sensor? any link which shows how to replace/clean

 

dont clean just test or replace

 

if that dosnt solve it you have a serious oil pressure problem to the cylinder heads

 

how to test?Im gonna order oneits like $40 bucks... but worst scenario if that doesnt help you mean to say my engine is screwed?

 

nope just the oil pump or a clogged oil vent to the cylinder heads but the CMP is suspect

 

Aren't you supposed to replace your timing belt every 60k miles? .....or is this just on the 4.2's?