1998 BMW 318i oil pump failiure

BONCHANA

MEMBER
1998 BMW 318I
1.8L
4 CYL
2WD
AUTOMATIC
145,000 MILES

The vehcle overheated and I discovered it was a pipe that had leaked so I replaced it now there is a knoking sount on the rokers the vehcle is not building enough oil presure to lift the compensation elements hence the noise on the rokers, do I need to replace the p oil pump? Becouse I've cleaned everywhere I thought the engine could have blockage in the oil galleries, thanx in advance for the remedy

4 Replies

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Have you checked oil pressure? Is the oil light staying on? Did the noise start when it overheated and how badly did it overheat?

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Thursday, September 25th, 2014 AT 5:31 AM

BONCHANA

MEMBER
3 POSTS

The noise started after oveheating, oil isn't coming even to where the oil filter is, I cleaned the sump gurd aswell as the oil fillter braket but still no oil presure when the car starts. It overheated not very bad I guess coz after is replaced the pipe I ran the car for abt 20 min and it didn't heat up again the thermal fan is working okay too

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Thursday, September 25th, 2014 AT 9:08 AM

BONCHANA

MEMBER
3 POSTS

The oil light goes off when I start the engine

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Thursday, September 25th, 2014 AT 9:14 AM

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

If oil isn't getting even to the oil filter, then it sounds like the pump has failed. However, I have to say that is odd on this vehicle. Also, overheating usually doesn't hurt the oil pump. Since there is no pressure, don't run the engine until you remove, inspect, and either repair or replace the oil pump.

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Thursday, September 25th, 2014 AT 5:54 PM