Question about 1985 Nissan 300ZX

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My Nissan 300 zx ,1985 with 95000 miles has low oil pressure

My Nissan 300 zx ,1985 with 95000 miles has low oil pressure at operating temperature , about 10 psa, at 2500 psi it is about 28 to 30 psi. I have replaced the guage last summer and also changed oil to 20 - 50 weight. It helped slightly. As it is costly to remove oil pan, ie need to drop steering any other ideas other than worn cam bearings or oil pump?

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6 Suggested Answers

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SOURCE: how much to replace the power steering pump & hose in a 1990 Nissan ZX

check out 300zx.com they'll have every thing you'll need to replace the power steering u can go used or new they have both

Posted on Dec 16, 2008

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SOURCE: Oil not circulating ? 1999 Nissan Altima DOHC,

Well, from the oil pump it goes into your oil filter so the lines going from the pump into the filter could be clogged. check that and see. Also on most imports I have found that they have to be primed after the oil pump has been replaced. Buy a oil pressure gauge and hook it up. Disconnect your fuel and spark delivery and then just crank over your motor to make sure you have good pressure. It takes up to 30 seconds to build on some cars. hope that helps.

Posted on Jul 21, 2009

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SOURCE: timing chain tensioner worn; plastic parts are in eng oil pan

No, should have enough room to slide it out ,if not disconnect the engine mounts and jack up or lift up the engine just enough to slide the pan.

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SOURCE: Oil leak on a 199o twin turbo manual transmition

rear main seal is the leak to fix: drop transmission remove clutch, drop oil pan and replace seal. seal is about 30 bucks, if your not auto savy id let a shop do it.. prolly around 800 tho...

Posted on Jan 26, 2010

cmcduncand
  • 714 Answers

SOURCE: Rear engine oil leak....

Oil leak can be attributed to several factors.
1. Gasket failure.
2. Uncontrolled Crank case pressure Failure.

RECOMENDATION:
Tighten both the valve cover and oil pan bolts.
Replace the Positive Crankcase Ventilation Valve and vacuum line.,

INFO: PCV
This is a valve causes a negative vacuum on the engine while its running, As to say if it had a leak in a valve cover it should not be leaking while its running, only when the engine it turned off.

Hope this tip guides you in the correct direction to solve this problem.

R/
David

Posted on Mar 15, 2010

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