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Low Oil Pressure - Not Sender Unit - HELP 

 

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 Post subject: Low Oil Pressure - Not Sender Unit - HELP
Posted: Sat Jan 27, 2007 7:46 pm 
Stock as a Rock
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Guys, I finally got around to checking my oil pressure with a mechanical guage today after the oil pressure alarm came on once more... the news is bad - the mech guage was reading 15-20 psi at idle when hot which I think is dangerously low. The problem I have is whether the problem is oil or oil pump... The pressure on cold start up and while driving normally seems to maintain around the 35-40psi mark. It seems to be when driving it hard and then idling it will drop down to the 15-20psi mark. Is this a symptom of poor oil (Magnatec 15w40) or a worn oil pump? I have tried thicker oil (20w50) and different brands but it doesn't make much difference. I would really appreciate some comments on this as I'm thinking this could be a rebuild on the way...
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Posted: Sun Jan 28, 2007 2:05 am 
Getting Side Ways
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It's not always oil or pump, it could be worn internals, especially bearings!

Does it ever rattle in the bottom end?
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Posted: Sun Jan 28, 2007 9:11 am 
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Theres certainly not enough noise in the engine to worry me in terms of big end knocking, it is slightly rattly on start-up for a brief second (still minimal though). The minute the lifters pump up its all good. Do the pressures seem abnormally low or not... ? The car has only done 152000kms which I don't think excessive at all.
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