1994 vr commodore executive knock in motor.

[vrbloke-77]

just bought a 1994 vr commodore executive when u start it up has a real metallic knock to it how ever when u rev it or the engine is showin high revs its dissapears. a mate of mine said it could be lifters, im hopin its not bearings. while its idling u hear the metallic knock. whats your opinion. what are symptoms of bearing damage and lifter damage. if big end bearings etc are stuffed will it blow smoke form exhaust etc. this is my first commodore. Thanks for nay advice or feedback

 

[soop]

Could very well be a bearing mate.
Perhaps low oil pressure too?

Check the pressure, you might be able to save it by replacing the oil pump.

 

[vrbloke-77]

ok i thought maybe lifters since noise isnt there all the time only when its idling. once u rev it or its underload as it dissapears

 

[Brett_jjj]

Id get the oil pressure tested to see if its within spec..

 

[vrbloke-77]

ok kewl ill get that done im hopin its not bearings. but someone told me if its bearings the noise would be there all the time. has only done 213000

 

[soop]

It'll be the bearing knocking, but whether its knocking because its rooted or because the oil pump is giving up is the question.
If it improves with RPM good chance its the pump.

 

[vrbloke-77]

if thats the case will it be ok to drive its just noisy on idle but then dissapears as the rpm increased or u rev it.

 

[zelby11]

It sounds like the oil pump isnt pumping the oil fast enough,but once the oil has covered all the components the noise stops.Get the pump checked but in the mean time use a heavy duty oil

 

[vrbloke-77]

is the pump located inside motor as i only bought this car yesterday and takin it in monday for a rwc. so i can register it.

 

[delcowizzid]

pump is part of the front timing cover and will very rarely cause any issues I.E never LOL. the pick up in the sump can become clogged with gasket goo and other foreign debris causeing low oil pressure.so many things can make a knock noise it could be anything does the noise get faster with revs