hi lads
can anybody shed any light on why a engine would loose oil pressure after a top end rebuild.

any help appreciated

 

something must be fooked

you done a compressions test? check the plugs first tho?

 

forgot to add, its still in the garage where the work has been done, had a new head gasket on and the mechanic dosnt know the problem

 

what car is it?

if it deffo was TOTALLY fine, just before the rebuild.

the mechanic dropped some shit down the oil ways, and either blocked the pick up, or
has fukked the bearings.. ?????

water not drained out fully, and has got in with the oil when head was taken off??? spose that would make the oil go like mayo though,
lol

 

chevrolet tacuma mate, oil pressure problems before rebuild, pick up cleaned, engine flushed, head skimmed and had a new head gasket. the oil pressure is fine on tick over but drops when the engine is under load.

 

Lovely GM quality lol. Has the oil pump fookes up.is the head gasket on the right way round.You couls put fiat punto head gaskets on both ways but 1 way would block the oil way.

 

Bastard didnt read your last post lol.The oil pump might be nackered.

 

it went in for a new oil pump mate but 'apparently' its fine

 

i'd take it back in then.. as the problems didnt arise suddenly after the head rebuild..

 

I would go with the oil pump, it may even be something to do with the relief valve.

Lol at the GM comment, Cosworth had a whole batch of faulty pumps a while back.

Martin

 

its still in mate

 

Change mechanic lol

 

Either something is blocked or the oil pump is fooked

 

Thats my diagnosis too,from my keyboard like

 

oil pump, if not id say its a strip down an inspection bud

 

cheers guys, it was ment to go in for a oil pump in for it with the rebuild the the mechanic said it was fine

 

any other ideas? chevrolet told my dad its ither the oil pump or the engine bearings without checking it themselvs, so the mechanic is checking the engine barings.

 

Did they change the pressure switch ? seen it done before

 

im puting my money on either pressure relife valve, or that lewid did it himself and isnt letting on as he fuckedup ?

 

shut it sandy

 

if the spring in pressure relife valve is worn / weakend, then there wont be enough pressure to open it on idle, but when revved theres enough pressure to open it bit its opening too far as its weakend, that could cause it.

 

right, just been to the garage. hes fetching a new oil pump tomorrow

 

just got home, the car is parked outside and the oilpump was the problem

 

good




























now tell your dad not to let u tinker with the car again

 

 

 

Just ring me next time

 

lol, will do matey. the monkey had to go to mansfield to pick up the part today