low Oil Pressure
Road Master
Joined: Feb 2005
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From: nc mountains
Two as one, I just got mine back together and had about 14lbs at speed hot and 6 to 8lbs at idle with the old stock pump, those motors never di hold good hot pressure. Had some motor problems and part of the fix was a s&s pump but it was there cheaper one and still have about 14 to 16 hot and 28 to 30 running hot. Thats twice what stock would be. I have run amsoil 20-50 for 26 years.
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Joined: Apr 2005
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I have about 68,000 mi. on it.
I have always used Harley 20-50, just haven't seen a need to change.
The sending unit should be good, that is where we put the oil guage
and it didn't change very much, so we know we were getting a correct
reading all the way around.
I have always used Harley 20-50, just haven't seen a need to change.
The sending unit should be good, that is where we put the oil guage
and it didn't change very much, so we know we were getting a correct
reading all the way around.
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Joined: Apr 2005
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This bike has run 22--24lbs. going down the road for the 6yrs.
that I have owned it and all of a sudden I start it one day, and
going down the road it runs 12--14lbs., just out of the blue,
c'mon something has to be going on. Maybe I just need to ride
it until "IT" happens, then come back on here and tell just what went
wrong. We will all understand someday. Just don't know when.
Thanks for all the ideas.
that I have owned it and all of a sudden I start it one day, and
going down the road it runs 12--14lbs., just out of the blue,
c'mon something has to be going on. Maybe I just need to ride
it until "IT" happens, then come back on here and tell just what went
wrong. We will all understand someday. Just don't know when.
Thanks for all the ideas.
Road Master
Joined: Feb 2005
Posts: 752
Likes: 0
From: nc mountains
You have changed the gauge and the sending unit and the oil pump,how about the oil lines ? They do degreade and they can reduce flow. You do have a mecanical gauge installed for a double check/ Maybe your first gauge was never right. Ask around and see what oil pressure hot that others run. I have never seen a evo run with 22+lbs hot running pressure with a stock pump and then to change to a s&s pump and make no improvement or change. It ain't a pump related problem. Of course you could just wait for "IT" to happen. Change the oil lines. Are you still running dino oil? ad something like reslone or a high detergent oil to help clean the inside,your motor could have some build up in the oil passages. IT still has good pressure at 12 to 14lbs hot if your getting real readings. I stopped trusting electric gauges years ago and always had a back up mechanical on the motor. I have one v-twin tech friend that years ago said he would not run a gauge on his stock evo just because how low the pressure ran when hot,drove him nuts, just the light.
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