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Discussion Starter · #1 ·
i did timing chain and gears along with intake gaskets and complete tune up(plugs wires cap rotor)about two months ago, vehicle came back with codes 300 and 463 fuel pressure is fine i pulsed the injectors on the new cpi and it is fine cam retard is negative 11 and map sensor voltage low timing not adjustable this thing is killing me anybody have some insight?
 
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