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1Back to top Go down   Whining noise after warm-up Empty Whining noise after warm-up Tue Oct 11, 2011 3:42 pm

robmack

robmack
Life time member
Life time member
Hi,

I was out on a ride with my neighbour this past Thanksgiving weekend. The weather was 25C and sunny so we went for a longish ride -- about 200+ km. Towards the end of the ride, I had about 1/2 tank of gas left. There was a whining noise coming from the tank region sounding like bees buzzing. I know that the fuel pump does whine somewhat and that it is cooled by the fuel but this got more pronounced as the ride went on and the fuel heated up. To confirm this, I stopped enough for the fuel to cool down. The noise was not evident.

Is this behaviour normal or is my pump on the way out and I should start saving for a new one? Could such a sound be a result of worn alternator bearings?

Cheers,
Robert.


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Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

2Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Tue Oct 11, 2011 4:53 pm

Guest

avatar
Guest
Last year on my nine week ride round Australia whenever the temperature rose above about 25c the fuel pump would whine. I forgot about it after a while. The other day it got to 29c and the fuel pump began its humming. It's normal, but mildly irritating.

Grab a large screwdriver and point the tip against the alternator, directly at the back (after removing the two small Allen head screws and the plastic vented cover) with your ear tight to the other end and give it a listen as the engine idles, then towards the front. You will hear noises but they generally won't sound much like a fuel pump's whine. Failing bearings usually growl.

    

3Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Tue Oct 11, 2011 6:02 pm

RT

RT
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Life time member
You weren't by chance riding past some English Rugby fans were you?
RT

    

4Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Tue Oct 11, 2011 8:59 pm

RicK G

RicK G
admin
admin
@RT wrote:You weren't by chance riding past some English Rugby fans were you?
RT

Ah so cynicalWhining noise after warm-up 44271


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

5Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Wed Jul 01, 2015 8:37 am

JGT

JGT
Gold member
Gold member
I noticed my pump started 'singing' this morning. Air temp was 25deg c+. Tank was quite warm due to air temp and heat from engine. Filled it up with fuel, stopped until it warmed up again. Do you think its due to the fuel aerating  and has anyone had a pump fail due to it? What RPM is the pump running at? John

    

6Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Thu Jul 02, 2015 12:30 am

pkay

pkay
active member
active member
I surprised nobody has said it's your other half complaining that you are going riding again....

Does it happen with the bike moving or stationery?


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PK
Gone riding!
    

7Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Thu Jul 02, 2015 3:20 am

JGT

JGT
Gold member
Gold member
Once the noise starts it's constant, at idle or at speed. The running of the engine is unaffected but it just bothers me as to what is happening.

    

8Back to top Go down   Whining noise after warm-up Empty Re: Whining noise after warm-up Fri Jul 03, 2015 9:05 pm

K75cster

K75cster
Life time member
Life time member
Maybe when it warms up enough it presses into the rubber clamp enough to transmit noise into the plastic holder and thus into the tank, to be amplified up to year ears?????


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

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