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desmopiega
Joined: 30 Oct 2013
Posts: 10
Location: rome, italy
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 Posted: Tue Dec 02, 2014 11:01 pm Post subject: yb9sri fuel pump problem |
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| I have Always problems with the fuel injection of my yb9sri, someone has thre problem that the rev limit arrive only at 10000 rpm? could be the fuel pump? it's a spare part of bmw r850? |
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phil-short
Joined: 30 Jul 2012
Posts: 197
Location: Dublin,Ireland
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| Posted: Thu Jan 29, 2015 12:18 am Post subject: |
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Doubt it is the pump.
I had a problem with mine when I got it. with overfueling at low revs and not running smoothly through the revs to the extent that I rarely saw the top of the powerband.
My best friend and a great mechanic stripped the injection unit and rebuilt it about 3 times to what he considered an ideal setup. He altered the poteniometer to run a more lean mix than original but I am also using an arrow race system so that may be a factor too.. I haven't fouled a plug in years so whatever he did worked.
This is probably no help to you but maybe you have sorted it already in any event. |
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desmopiega
Joined: 30 Oct 2013
Posts: 10
Location: rome, italy
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| Posted: Sun May 03, 2015 2:40 pm Post subject: |
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| it could be thank you Phil but in the past i have done the test with other material and the only thing that i haven't changed was the fuel pump and the problem remain |
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