Thread: Engine knocking....help

Did you try using a thinner oil like 5-30 or 0-30?

That's not a good sign. Also cracked flexplates will sound like the engine is knocking.

Originally Posted by blortz

i actually used a 5-30 castrol oil with some lucas oil stabilizer.... hasnt really gotten worse or better???? im new to owning a grand prix iom used to trucks... i dont know what a flex plate is..... is there anyway i can crawl under the car or something to see??? i dont wanna have to take apart the block but i will if thats whats needed to fix it... have only owned the car for a month now... no problems up until now....

Flexplate- Is what a flywheel is called on an automatic transmission.

What kind of knock? Take a video of it so we can hear this knock and better diagnose the problem.

Try using thicker oil such as 10-30 or 10-40 the thicker oil tends to quiet down problems but its not the solution to fixing noisy stuff.

Use Gear lube...like 80-90W...that'll get rid of any noise you have.

Kidding though...

Video FTW, like stated. Trying to diagnose something without hearing it is like finding a STD free whore in Canada