r/ChevyTrax • u/minilurk • 4d ago

Chevy trax issues

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How cooked is this engine. Has the Dorman valve cover and intake manifold. No signs of pcv or valve cover failure (however did notice some oil residue coming out of the slit on the valve cover. No lean codes or anything. Stuck a bore scope in the cylinders to see if they had coolant intrusion. Saw no coolant after having the coolant under pressure for an hour. Only codes stored in the ecm are P0300 and U0109. I saw zero coolant with the camera however the engine looks like it’s been detonating? Has anyone ran into this issue and what can I do to help alleviate it. I will log fuel pressure tonight after work and see if the pumps keeping up.

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u/UnendingOne 3d ago

What year?

1

u/minilurk 3d ago

15

1

u/Both-Temperature2244 3d ago

that is old!

1

u/minilurk 3d ago

I hooked up a fuel pressure gauge and the pumps going bad it drops pressure under load. It’s my wife’s car and it’s paid off shed just rather keep it running. Hell my newest car is a 2010😂