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TOPIC: Re:HELP! losing oil pressure
#85831
BlkCherryBomb (User)
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HELP! losing oil pressure 6 Months, 1 Week ago  
It has gotten real hot real fast here in CA. Riding home from work this evening, I hit some traffic, so I got a chance to glance down at my oil pressure gauge. It was at 0. As soon as I give it any kind of throttle, it picks back up, but at idle it drops to 0 every time. Now, I've ridden on plenty of hot days and sat in my fair share of traffic. I've never had the gauge go lower than 5 psi at idle. Usually between 5 and 10 even over 100 degrees. My oil pressure at freeway speed is also now 5-10 psi lower than normal.

I always use Mobil 1 synthetic 20-50, always put 4 qts in. My dipstick is showing full, and I have no leaks. Could my gauge be going out? Is it my pump? Did I get a weak batch of oil this last time? Where to start?
 
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#85848
Musky (Moderator)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Is your idle speed lower?
 
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#85853
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Nope. Even bumped it up a tad to help out with that. I do have a windshield on it now and I haven't had one on in hot weather before. Could that be retaining heat to the point where my motor is running that much hotter?
 
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#85855
Musky (Moderator)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
I doubt it. People run these bikes in 100 degrees plus. If the heat was going to drop the pressure to zero they would blow up. I would suspect your gauge first.
 
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#85856
greyphart (User)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Guessing there's no apparent leakage. Possibly your gauge is partially plugged or defective? First thing I'd do is check it over real good after a long ride for leaks. Then go down the list of possibles and try and eliminate each one till you get to one that is a possible. I get the same thing in my truck. The pressure fluctuates like crazy sometimes. M2CTS.

Greyphart
 
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#85860
Big Bear (Moderator)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Don't know if this helps........buddys shovel (that used 70 weight) had great oil pressure until it was hot......then zero. Ran that way forever , and he was hard on it, so....... BB
 
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#85903
BlkCherryBomb (User)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
I think I'll play it safe and change the oil just to eliminate that from the list. Then I'll check out this gauge and see if I can easily find a replacement. I'd sure hate to grenade this thing doin 75 on the freeway.
 
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#85944
Flashback (Moderator)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Believe I would agree with Greyphart, the guage is defective/partially plugged.. If your pressure were truly at 0, the lifters would collapse which would cause your engine to rattle like a can of marbles..imho
 
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#85953
BlkCherryBomb (User)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
Well......I don't know if cleaning the fittings at the end of the braided line would help, but I'm certainly willing to do it.
 
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#85961
Blackroadie (User)
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Re:HELP! losing oil pressure 6 Months, 1 Week ago  
I say gauge also... I've had 2 go bad on me, scared the heck out of me when I saw it. I was drivin' my semi last year, which holds 55 or so lbs. at 60 m.p.h. I looked down and saw it at 20 lbs. at 60 mph. Just the gauge. Also on a harley a few years back the gauge went bad. Hopefully thats all yours is.
 
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