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Buell Forum » 1125R Superbike Board » Archive through April 12, 2014 » Fuel rail not holding pressure? « Previous Next »

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Brokengq
Posted on Tuesday, April 08, 2014 - 08:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So I know that the 1125r is supposed to beep and whir after you shut it down. I read somewhere that the beeping is supposed to be in about 20 second intervals. Mine is every 11 seconds on average. Does that mean my fuel rail isn't holding proper pressure? It runs fine. If it is losing pressure, where would it most likely be from?
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D_adams
Posted on Tuesday, April 08, 2014 - 08:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It does that to keep from getting vapor lock in the fuel line I think. It maintains a specific pressure, not time based, just runs to keep it at whatever pressure is required.
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Brokengq
Posted on Tuesday, April 08, 2014 - 08:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes but what I'm asking is, I think mine runs more than it should. The only reason I could figure why is that the fuel rail is not holding pressure, therefore the pump needs to run more often to maintain the correct pressure while the bike is off. So tl;dr: does anyone else's bike run the pump every 10ish seconds? Is 10 seconds still considered normal?
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Stirz007
Posted on Tuesday, April 08, 2014 - 10:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the fuel rail is not holding pressure, gas will leak out - unless you see gas leaks, that's not the issue. More likely, the check valve in the fuel pump is going.
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Jimustanguitar
Posted on Wednesday, April 09, 2014 - 08:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

10 seconds sounds about right. At least that's what mine does.
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