eccsmk
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| posted on 24/11/07 at 10:51 PM |
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tin top question
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
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rusty nuts
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| posted on 24/11/07 at 10:54 PM |
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Stuck oil pressure relief valve for sure.
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NeilP
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| posted on 24/11/07 at 10:55 PM |
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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
If you pay peanuts...
Mentale, yar? Yar, mentale!
Drive it like you stole it!
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eccsmk
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| posted on 24/11/07 at 11:06 PM |
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changed the pump tonight and its the same because we also thought it was relief valve
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rusty nuts
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| posted on 25/11/07 at 10:22 AM |
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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
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eccsmk
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| posted on 25/11/07 at 10:47 AM |
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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.
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omega 24 v6
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| posted on 25/11/07 at 11:32 AM |
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quote:
its just had full engine rebuild and the problen we are having is the oil pressure is far too high
Did you build it yourself??
Could be shells in the wrong way round blocking the oil feed holes. Drop the sump and check first before a full head strip.
If it looks wrong it probably is wrong.
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britishtrident
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| posted on 25/11/07 at 03:52 PM |
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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]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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eccsmk
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| posted on 25/11/07 at 04:23 PM |
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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
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