Re: Fuel pump noise.

[Tpcutter@xxxxxxx]

In a message dated 5/2/04 1:14:28 AM Eastern Standard Time, 
kari.dan@xxxxxxxxxxx writes:


<<I lurk regularly and have gleaned much information from this list.  My
question is regarding the fuel pump on my 2000 R1100R.  Recently it started
making a loud high-pitched whine for about = second when I turn the key on.
Then it settles into its customary normal low-pitch whine.  It doesnt do
this every time, and it doesnt seem to matter if the tank is full or not.
I havent noticed any change in the pump performance. Is this a bad sign?
If so, is there a fix?  Is it signaling the demise of my pump?  Thanks in
advance for you input.>>


Sounds like there is a high pressure leak inside the tank. This could be a 
clamp has loosened as the hose it's clamping has compressed. The fix is to go in 
and tighten ALL the clamps a bit. Same with the outside ones whiler you are 
there. A conscientious mechanic will be checking the outside clamps at each 
service. They do loosen, and a dangerous condition can result. The internal leak 
can cause a slight degradation of performance as the fuel pressure begins to 
fluctuate faster than the pressure regulator can comprnsate. This is a very 
tough probblem to diagnose, but it becomes evident when you tighten the clamps 
and suddenly the bike runs better.

Tom Cutter

------------------------------

End of oilheads-digest V1 #177
******************************