Disco V8 problems

[YamR1V64motion]

the oil warning light comes on at low revs even though there is plenty of oil, it goes out just over 1000 RPM and does not come back onuntil the revs drop again, im guessing this is something to do with the oil pressure, so is it fixable or is the engine completly screwed?.

[biglepton]

Bit hard to tell from your post if it's buggered or not.

Low oil pressure is common on LR V8's that have done lots of miles - has yours?

Could be the oil pump is poorly. Has it got the right oil in it? Old, high mileage V8's often run better with a decent 20W50 than the usual 15W40. Has it had any major work done on it recently?

[YamR1V64motion]

its one i got for stock to sell on, done 113k, oil looks like its been changed recently and its not black at all, the car runs ok and sounds smooth enough although there is a noise coming from the front but this i think is to do with the exhaust and not the engine.
the only work i can tell thats been done in the not too distant past is an LPG conversion, im hoping its not anything major as i dont really want to break it for spares if it can be avoided.

Edited by YamR1V64motion on Tuesday 16th October 16:42

[GKP]

Change the oil + filter and report back.

[YamR1V64motion]

i shall do change both tomorrow and put some slightly thicker oil in, if it was oil pressure and the engine was ruined i imagine it wouldnt have made it home 70 ish miles at motorway speed last night?.

[GKP]

The Rover V8 tends to need volume of oil being pumped around it rather than rely on oil pressure, so once you're above tickover it probably won't be an issue.

[YamR1V64motion]

GKP said:

The Rover V8 tends to need volume of oil being pumped around it rather than rely on oil pressure, so once you're above tickover it probably won't be an issue.

would it be unlikely to destroy the engine if its been driven in normal conditions, im going to do the oil and filter today, as welll as check the sump hopefully this will help it.

[Steve_D]

My oil pressure was doing the same and was fixed with new gears in the pump.
Currently about £30 for the bits and dead easy to fit.

Steve

[biglepton]

Fill it with a decent 20W50 now it's over 100k miles and if you're still worried, change the oil pump and remember to rpime it with lts of grease before refit. Replace oil pressure sensor as well for good measure. Doubt it's serious.

[YamR1V64motion]

Steve_D said:

My oil pressure was doing the same and was fixed with new gears in the pump.
Currently about £30 for the bits and dead easy to fit.

Steve

i was under the impression the oil pump was a bit of a nightmare of a job on them, where abouts is it located on the Rover V8?.

[Steve_D]

YamR1V64motion said:

Steve_D said:

My oil pressure was doing the same and was fixed with new gears in the pump.
Currently about £30 for the bits and dead easy to fit.

Steve

i was under the impression the oil pump was a bit of a nightmare of a job on them, where abouts is it located on the Rover V8?.

On the front left of the engine when looking in. The oil filter housing is the top cover of the pump. Undo 6 bolts and take the cover off. slide out the gears. There are a variety of measurements you can make to confirm the pumps condition or as I did just pop some new gears in. Pack the pump with petroleum jelly (because it won't self prime) bolt the lid back in place.
Probably takes less time than it took me to type this.

Steve

[Graham]

YamR1V64motion said:

i was under the impression the oil pump was a bit of a nightmare of a job on them, where abouts is it located on the Rover V8?.

depends which version of the rv8 you have pre serp its on the side of the front cover, on serpentine its inside the front cover meaning a new front cover. rather than just a set of gears..


I think the only pita on the pre serp is making sure they pump is primed.