Question about 2000 Harley Davidson FLHTCUI Electra Glide Ultra Classic

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Oil presure drops to zero when idle and about 10psi at 2000 rpm but has no noise or rattle

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This is typical oil pressure on a Harley engine when it is hot. This is also why I suggest that you never install an oil pressure gauge on your Harley. All it's good for is scaring the fool out of you.

A Harley oilling system is a high volume low pressure system. Since a Harley engine is constructed using roller bearings in the bottom end instead of babbit shell type bearings, it will not hold oil pressure like the average *** bike. Take a drinking starw and cut it into sections about 1/2 long. Line the sections up in a row and notice that each section touch the table in one spot only. If an oil hole were there, it would be blocked and oil pressure would build up. But as soon as the roller moved, the hole will open and oil will flow with no resistance. This is why a Harley engine won't build up a lot of oil pressure, the oil flows freely into the engine.

Good Luck

Posted on Aug 28, 2010

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My 2002 dose the same thing the pressure should be 30-38 lbs not 0-10

Posted on Sep 13, 2010


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