ls6pilot Posted April 13, 2019 Report Share Posted April 13, 2019 Recently at cold startup my oil pressure gauge (steam) pegs high and after about 20 seconds drops to normal levels. Recommendations for eval? Thanks Rich Link to comment Share on other sites More sharing options...
Tom Baker Posted April 13, 2019 Report Share Posted April 13, 2019 The title says temperature, the post says pressure. If it is pressure replace the sending unit. There is a bad spot on the wiper. Link to comment Share on other sites More sharing options...
ls6pilot Posted April 13, 2019 Author Report Share Posted April 13, 2019 Quote My bad it is pressure. Thanks Link to comment Share on other sites More sharing options...
Roger Lee Posted April 14, 2019 Report Share Posted April 14, 2019 Depending on the type of oil and OAT and engine block temp the oil pressure can many times be any where from 65 - 80 psi, but should come back down to normal as it warms up. This can also be influenced by the type of oil pressure plug screw, oil pressure spring and whether you have the ball bearing or the mushroom style oil pressure regulator. Link to comment Share on other sites More sharing options...
Tom Baker Posted April 14, 2019 Report Share Posted April 14, 2019 Being high is one thing pegging is another. If it is pegging it is most likely a bad spot on the sender. I have tested several sending units by measuring resistance under different pressures. Many of them have bad spots through the range as pressure changes. Link to comment Share on other sites More sharing options...
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