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1Back to top Go down    K75 Fuel Pump Question on Tue Jul 02, 2013 4:52 am

weez

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When pulling off the fuel hoses on bottom of tank is it normal for gas to continue coming out of the pump discharge to fuel rail connection?
I understand there's a built-in check valve in the pump but mine will keep flowing gas, siphoning I would guess, unless I either drain the tank down low enough or tilt the tank over to stop it. I've had the bike since '87 and I've had the tank off countless times and IIRC it would usually dribble a little and then completely stop. It seems this started when I put a used pump in last year so I'm suspecting the check valve is stuck and/or not operating correctly. The pump seems to work fine otherwise.


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1987 K75T 326K aka Uncle Fester.
2000 KLR 685
2000 KLR 650
1997 ST1100
2000 DRZ400E
    

2Back to top Go down    Re: K75 Fuel Pump Question on Tue Jul 02, 2013 6:32 am

RicK G

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When I pull the hoses off I always open the filler as that prevents a pressure build up which will force the fuel out.
Othere here place a piece of fuel line from inlet to outlet and so seal the tank off.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

3Back to top Go down    Re: K75 Fuel Pump Question on Tue Jul 02, 2013 11:53 am

ungaas

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I use a Golf tee on each hose as a plug.

Dig your old golf bag out from the shed, plenty there.



Last edited by ungaas on Tue Jul 02, 2013 11:57 am; edited 1 time in total (Reason for editing : Clarity)


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88 K100 Unfaired 0033026

92 K1100RT 6455097
    

4Back to top Go down    Re: K75 Fuel Pump Question on Tue Jul 02, 2013 12:49 pm

charlie99

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the check valve is on the return line

just so you know


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

5Back to top Go down    Re: K75 Fuel Pump Question on Tue Jul 02, 2013 1:15 pm

charliebarnwell

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I seen on youtube - start the engine and whilst running disconnect the fuel pump connector behind the right hand side panel and after a couple of seconds the engine stops coz there is no fuel getting through and all the pressure is used up.

http://www.youtube.com/watch?v=od4r7SoIPRo

goto about 2 minutes into the vid

    

6Back to top Go down    Re: K75 Fuel Pump Question on Tue Jul 02, 2013 6:49 pm

weez

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Thanks for the info and tips everyone.


__________________________________________________
1987 K75T 326K aka Uncle Fester.
2000 KLR 685
2000 KLR 650
1997 ST1100
2000 DRZ400E
    

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