the car is a mk 2 golf gti 8 valve
its just had full engine rebuild and the problen we are having is the oil pressure is far too high
the gauges are on the head and the oil filter housing and are both reading 80 psi on tickover and 120 psi at 2000 rpm
please can anyone shed any light

thanks in advance

Stuck oil pressure relief valve for sure.

If you're lucky a stuck relief valve - Look it up in the haynes manual.

If you are unlucky a blockage somewhere in the flow lines from the pump to critical parts

changed the pump tonight and its the same because we also thought it was relief valve

Is the gauge you are using a known good one ? or are you using two seperate gauges?. Suspect if oil galleries are blocked there would be no oil supplied to whatever the gallery supplied? also even if there is a blockage oil pressure relief valve should open and drop to correct pressure. The whole point of the relief valve is to limit pressure. Open up the relief valve and check that the valve has not stuck . Unlikely with 2 seperate pumps but faulty parts are not impossible

one gauge is new the other is one we have been using on another car for a few years we have swapped thses with 2 more just to make sure it wasn't faulty gauges

we tried relief valve's on both pumps and both were fine off the car so i think it's time to strip it down.

quote:

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its just had full engine rebuild and the problen we are having is the oil pressure is far too high

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It can only be a stuck pressure relief valve or dodgey gauge.

The relief valve controls the max pressure in the system.

[Edited on 25/11/07 by britishtrident]

both pumps have been tested today and yet another gauge tried and it's still the same

im guessing we will just have to try mains then its head off time

just to add the engine was built by the same person who has build about thirty others for us.

thanks folks