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Cadillac Repair/95 Cadi Deville
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Question
I have a 95 Cadi Deville, 4.9L Base model. My valves rattle even though the oil dip-stick shows full level. Could this be caused due to the oil pressure switch and valve cover gaskets are leaking or am I faced with an even bigger problem...like bad oil pump?
What you need to do is install an external oil pressure gage on the engine and physically see if the oil pressure is within factory specifications being:
11 psi at normal operating temperature with engine at idle speed.
53 psi at normal operating temperature with engine at 2000 rpms.
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On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.
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Held over 15 GM certifications prior to retirement in 1989.
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Prior to retirement held several ASE certifications, numerous Factory certifications.
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