Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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will the oil light come on or stay on ?
did this problem start out of the blue ?
or slowly gotten worse ?
eng light stays on
all at once
Ok Douglas with that noise you are hearing the odds are either we have a low oil pressure issue or the lifters are bleeding down the oil prime in them when it sits
when this happens it will take longer to start and start hard as the lifters need to pump back up with oil
the best action to take is to have a mechanical oil gauge connected to the engine and make sure the oil PSI is within spec if its not there is more than likely an oil pump failure
if the oil PSI is good then the odds are the lifters are bad and will need to be replaced
is seems the shop that added the oil stuff it make it better which the oil stuff will make the lifters pump back up and hold oil prime better