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Old August 16th, 2018, 12:48 PM   #1
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adding oil pressure guage

I added an oil pressure gauge to my 1994 600SS. I installed the sender where the stock pressure switch is located. The gauge seems to be reading 80psi with the engine at idle even after warming up for 15 min. I replaced the sensor with an oil pressure test gauge and it seems to be reading the same.

Is the stock pressure switch location reading pressure before the pressure bypass or something? I would have thought the pressure would drop after 15 min of idling. Running 10w40(will be switching to 15w50 once i finish setting up the bike.
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Old August 16th, 2018, 05:11 PM   #2
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I believe the pressure reading should vary where you have measured it with a testing gauge. It should gradually drop as the oil gets hot at idle and then increase with throttle applications.
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Old August 17th, 2018, 05:29 PM   #3
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Originally Posted by Aussie_Bob View Post
I believe the pressure reading should vary where you have measured it with a testing gauge. It should gradually drop as the oil gets hot at idle and then increase with throttle applications.
That's my assumption as well. I'm going to check the pressure relief valve to see if it is stuck closed.
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Old August 24th, 2018, 06:56 AM   #4
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Pressure relief valve seems ok but the pressure relief spring may have been binding in the bore(it could have just been stuck on the bolt threads though). I did some google searching and found the 750ss came with 2 different plug lengths depending on year which preloaded the pressure relief valve more or less. I cross referenced the part number for my plug against the 600ss exploded diagram and it seems correct. However, it is the longer of the 2 spec'd for the 750ss. not sure if that makes a difference. One other thing I may try is swapping back to an oem ducati oil filter. It's running a K&N right now. Not sure if that's making the difference.
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