Thread: Another Rover Oil Pressure Issue - New Engine

Talk to us after you have fitted a new oil filter, although I have found Ryco to have better non return valves than OEM.
Regards Philip A

What oil are you using?,is it the right grade?.My Tdi did a similar thing so I removed the rocker cover and started it and oil squirted up within seconds so I replaced the pressure switch and all was good. Pat

oil grade is as recommended in the manual. I've already replaced the sender unit and no change to the start up issue.

The Ryco brand filter I used says it is made in the USA - so it should be OK unlike the early Chinese made Ryco's which were a nighmare from all reports...but it could be draining or syphoning back into the sump (like the Nissan 4.2 turbo diesels do), thereby slowing oil pressure build up while the filter fills...

I guess I'll find out tonight after I change it.

Thanks for the advice so far.

how did you go Eric....I can supply a good motor for you, comes with a 93 2 door attached

seriously tho, did the filter make any difference

hum, Mark yes well at least we know the old girl's engine is tough. God knows how many time we saw sparks out the back!!

New filter has made a big difference on cold starts. Swapping from Ryco to Coopers (OE I believe) has reduced the time taken for the oil light to go off on cold starts from up to 20 seconds to less than 5.

I'm still not sure if that's OK as by comparison I checked:-
Suzuki Swift - less than 2 secs
Holden Commodore x 3 - less than 2 secs, 2 on cranking (VN and VT)!
MF Perkins 6L diesel = less than 2 secs (not started for days)
Nissan X Trail = less than 1 sec
Nissan Patrol 4L petrol - oil pressure gauge responds immediately on cranking

So, is less than 5 seconds OK for the Rover for a cold start?

Seems there is a considerable difference between the Coopers and Ryco filter. Maybe the Ryco one (US made) is faulty as I have used them before and not had such issues.

I'm still going to fit a OP gauge.

5 seconds is still a long time without oil pressure.
If the oil filter made such a difference, I'd suggest the oil supply is completely draining. Makes me think it could be the non-return valve. Stuck ball or something. Pump is obviously making good pressure if light doesn't flicker on at idle.

I would have a look at the pressure relief valve. I note you said the front cover was reconditioned, so maybe have a look at the valve and check there is not junk in it, and that both the bore and the piston are unmarked.
Regards Philip A

Originally Posted by PhilipA

I would have a look at the pressure relief valve. I note you said the front cover was reconditioned, so maybe have a look at the valve and check there is not junk in it, and that both the bore and the piston are unmarked.
Regards Philip A

Thanks

the valve was tested by the supplier, but yes the problem could be there given the front cover is refurbished. Indeed, I suspected the same and requested the supplier to pay for the front cover to be removed and the valve and pump clearances checked by an experienced mechanic...so far silence from them on that front but hopefully they will stand by their products and service

I've not looked yet, but I guess removal of the pressure relief valve would require removal of the front cover??