Eng nock
Asked by Denkobe1313 Oct 30, 2017 at 08:25 AM about the 2000 Pontiac Grand Prix GTP Coupe
Question type: Maintenance & Repair
I have a 2000 pontiac grand prix 3.8 super charged
an its making a nocking what do i do to find out
what is goinf on
4 Answers
Check the engine oil first. If it is low, add oil before starting the engine again. If it is a deep knocking that knocks faster when the engine is revved, you may have a bad engine bearing. Listen under the car (bottom of the engine), it will be louder under the car. If that is the case, unfortunately you will need a major engine repair (possibly a new engine.)
mikeatpriestlake answered 6 years ago
If there is something bad enough to cause an engine knock, there must be a check engine light. Scan the computer for codes either way. you may have to take it to an experienced mechanic and have them listen to it.
Denkobe1313 answered 6 years ago
Gary it dosent sound like its comming from the bottom sounds like its comming from the front top an it does get louder as the rpms go up
Is the noise more of a tapping or ticking? Noise from the top of the engine is usually the valve train, caused by not enough oil to the top of the engine or worn rockers or bad lifters. Either way, sounds like an oil issue.