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[trainmanone]

hi gang,have problem with 2l 16v on a m plate
engen starts runs ok for about ten min at idle rev or drive short distance then oil light comes on rev above 2000 revs gos out,back to idle comes on switch eng off then start again oil light off then the same allover again this has been happening for a few days (uesd eng flush and done oil filter change to day still the same)
any ideas guys and girls?

regards pete

[TheBoy]

tired oil pump? blocked pick up?

[Kevin Wood]

Are you getting any noise from the hydraulic tappets which might indicate a lack of oil pressure?

Could be the pressure switch, I guess, but best to assume it's got a problem, and a potentially life-threatening one at that.

Can you get a gauge on it to measure the actual oil pressure?

If it's low at idle and picks up at higher revs I would check the pressure relief valve for signs that it could be sticking open.

Kevin

[Marks DTM Calib]

Tired oil pump or a stuck pressure release valve.....the latter being an easy one to check, the former requires an oil pressure gauge.

[trainmanone]

noisey tappets when light on so going for sticking pressure release valve.........ummmmm where is that ?

[trainmanone]

well guys and gals spent the afternoon removing ac compressor steering pump and bracket to get to pressure relief valve (what a performance lol)

cleand  it up and cleaned plunger ect.
big smiles all round oil pressure light now out and sounds sweet .

many thanks for the input
pete

[TheBoy]

well guys and gals spent the afternoon removing ac compressor steering pump and bracket to get to pressure relief valve (what a performance lol)

cleand  it up and cleaned plunger ect.
big smiles all round oil pressure light now out and sounds sweet .

many thanks for the input
pete

Brilliant

[Kevin Wood]

Excellent

Glad that's sorted.

Kevin

[trainmanone]

gerrrr same problem returned

just to add the car had been stood 14 months so suspect sludge!!!!!

whats the best eng flush or can i put any other solvent in without running

please help all you top people

pete

[Kevin Wood]

I would check for burrs on the pressure relief valve plunger and bore. Maybe it's sticking due to an imperfection in the surfaces which could be polished away.

As for flushing, the problem is that any solids that you do dislodge by flushing will find their way into the pump and relief valve and could potentially make the problem worse. If you suspect sludge I would be inclined to remove the lower sump, make sure the oil pickup is clear and clean out the sump as far as possible with paraffin or similar and then keep oil changes regular for a while to ensure the oil is clean.

Kevin

[trainmanone]

thats what i thought kevin........

unfortunatly i dont have a hoist to lift eng as mr haynes says is there another way to take off sump
and any one in the manchester area who could help me do it

[Kevin Wood]

I wonder if you could at least get to the strainer by just removing the lower half of the sump? I think that can be done with engine in-situ?

Maybe that's all the access you'd need to at least assess if you've got a problem with muck in there. Don't know. I've never been in there myself. Ronnie would know, as he's investigated a few low oil pressure issues recently.

Might also be worth getting a new spring and plunger for the relief valve, and feeling in the bore for any unevenness. A scotchpad or similar could be used to gently remove any small burrs.

Kevin

[trainmanone]

the plunger and piston seem ok

all depends on where the oil pick up is if at front of sump might be able to get it out fingers crossed

any body know where abouts the pick up is front or rear
any pic would be helpfull

pete

[trainmanone]

bump :-?