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The mkiv Supra Owners Club

when does the relief valve open??


jza800

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I just have to get some inputs here.. dont now if i have a oil pressure gauge problem or something wrong somewhere..

 

on cold start up i have 80 psi off oil pressure, thats sounds good and normal.. on hot engine i idle about 17 to 21 psi off oil pressure, at cruise i have 47 to 50 psi at 2000 rpms, so long so good, thats seems all fine, but here is my little concern.. when i step on it, the oil pressure stops at 70 psi, even if i only are on 4000 rpm, and it stayes there, even if i goes to 5000rpm or 6000 rpm, so my question is, when does the relief valve open ?? and does the symtoms sounds normal , or do i have a worn gauge???

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