Hi guys, I pulled the guaged out and cleaned some dried oil off the back of the guage, but there is a gause thing.. Can I squirt some engine degreaser into the back of the guage?
I have tried new Pipe, used a master guage and getting 75psi

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I would use a solvent like CRC Brakleen. It dissolves the oil and crud allowing it to run out and then it evaporates away.

thanks Morris!

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I had this problem too. You'll notice the gauge working much better afterward.

While the gauge is off purge the oil out of the line. The oil in there could be years old and full of crud.

Disconnect the coil and turn over the motor briefly while holding a jar under the gauge end of the line. Be careful it doesn't squirt everywhere.

Also worth checking the oil pressure relief valve. If it sticks open or closed it can give high or low readings.

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68 Morris Cooper S Mk1 (*ex 78 1275 LS 4th last built, 70 Morris 1500 OHC & 70 MiniMatic)

no worries, the guage is working now.. had to give it a tap

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