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10-08-09, 08:29 PM
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#1 |
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Member
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Join Date: May 2009
Location: Manchester
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constant high pitch noise near the tank?
i have noticed a constant high pitch noise near the tank when the bike is running, similar to the fuel injection noise when you turn the key.
was just wondering what this is and is it anything to worry about ? cheers Ant 
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2006-2007 -- Gilera Runner 50 - Sold 2007-2008 -- Hyosung XRX125 - Stolen 2009-2010 -- 05 SV650n - CAT - B 2010-Now -- 00 SV650s & 00 SV650n & GSXR 600 K2 |
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10-08-09, 08:39 PM
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#2 |
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No, I don't lend tools.
Mega Poster
Join Date: Jul 2003
Location: Skunk Works, Nth London
Posts: 8,680
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Re: constant high pitch noise near the tank?
You're probably the hearing the fuel pump.
When the ignition is switched on, the pump starts and pressurises the fuel system but as the engine isn't running the fuel pressure will soon rise to the cut-off point and so the pump stops. As soon as you start the engine the injectors pass fuel, thus the system pressure falls and the pump starts again.
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If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst" |
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10-08-09, 08:39 PM
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#3 |
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No, I don't lend tools.
Mega Poster
Join Date: Jul 2003
Location: Skunk Works, Nth London
Posts: 8,680
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Re: constant high pitch noise near the tank?
PS. The pump is inside the tank.
__________________
If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst" |
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10-08-09, 08:58 PM
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#4 |
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Member
Mega Poster
Join Date: May 2009
Location: Manchester
Posts: 1,492
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Re: constant high pitch noise near the tank?
cheers sid,
so its normal ... should the pump noise go off at any point when the engine is running or is it constaly pressurising the fuel
__________________
2006-2007 -- Gilera Runner 50 - Sold 2007-2008 -- Hyosung XRX125 - Stolen 2009-2010 -- 05 SV650n - CAT - B 2010-Now -- 00 SV650s & 00 SV650n & GSXR 600 K2 |
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10-08-09, 09:21 PM
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#5 |
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No, I don't lend tools.
Mega Poster
Join Date: Jul 2003
Location: Skunk Works, Nth London
Posts: 8,680
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Re: constant high pitch noise near the tank?
Good question, I don't know.
I suppose at tickover when the fuel consumption would be very low the pump might switch off, albeit briefly, certainly when the engine is being used to any degree I imagine the pump would run pretty much constantly.
__________________
If an SV650 has a flat tyre in the forest and no-one is there to blow it up, how long will it be 'til someone posts that the reg/rec is duff and the world will end unless a CBR unit is fitted? A little bit of knowledge = a dangerous thing. "a deathless anthem of nuclear-strength romantic angst" |
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12-08-09, 05:42 PM
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#6 | |
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Large Member
Mega Poster
Join Date: Jan 2006
Location: Minsterworth, Gloucester
Posts: 2,353
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Re: constant high pitch noise near the tank?
Quote:
Is the missus riding it??? Runs and hides
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