Carb bowl fuel seepage

  • archaicbiker
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Carb bowl fuel seepage

15 May 2007 20:10
#140475
I cleaned and sync carbs and shes running pretty darn good. My problem is im getting some fuel seepage past the bowl gaskets even though they are new. Any tips/tricks etc to fix this problem? :huh:

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  • Sandy
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Re: Carb bowl fuel seepage

15 May 2007 20:26
#140487
Are You SURE that the fuel is coming from the BOWLS...and not the "T-Fittings" that join the carbs together,or the fuel-line t's?
The fuel will leak from those fittings,and build up on the bowls,making You think it's the bowls that are the culprits...be sure.B)
1977 KZ1000 A-1

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  • N0NB
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Re: Carb bowl fuel seepage

15 May 2007 20:30
#140491
To add to Sandy's point, gas will follow all sorts of contours and obscure its point of origin.

I have used Teflon tape to improve the seal on those tee fittings which usually seem to become worn down over time due to movement.
Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

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  • Sandy
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Re: Carb bowl fuel seepage

15 May 2007 20:41
#140494
Exactly what Nate said!

On My old 26mm carbs I was using,I too,used the teflon-tape and it worked like a charm for 2-3 seasons,before I switched to the 29mm carbs. B)
1977 KZ1000 A-1

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  • Patton
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Re: Carb bowl fuel seepage

15 May 2007 22:07
#140518
If new fuel pipes are desired, they are available from Z1E --

fuel pipe
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KZ900 LTD

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  • austin3119
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Re: Carb bowl fuel seepage

15 May 2007 23:27
#140527
Nice, I keep on wondering where the fuel is leaking on my 26's . I think I will pull them off and try the teflon tape.

I know this thread wasn't intended for me, but I think it is going to help me. Thanks.

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  • Jeff.Saunders
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Re: Carb bowl fuel seepage

16 May 2007 03:28
#140533
One problem I've seen on several sets of these old carbs is where previous owners have overtightened the float bowl screws and distorted the carb body - essentially pulling the corners of the float bowl mount area downwards - often a visual look will see the corners slightly bent downwards.

In cases like this, the gasket can't easily do it's job - I know a couple of customers have double-gasketed the float bowl in an attempt to stem the weeping.
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  • baldy110
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Re: Carb bowl fuel seepage

16 May 2007 09:27
#140605
I've worked on several carbs with the bent float bowl corners. I could never get the bowls to seal. I placed the bowls upside down on on open vice and lightly tapped the bottom with a hard plastic hammer. They slowly bent the corners back. They sealed after that.

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  • archaicbiker
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Re: Carb bowl fuel seepage

16 May 2007 19:50
#140793
Thanks for all the replys. The tees looked almost new but I will check them anyway. Its more likely the bent corner thing since the screws were so tight and they were leaking around the bowl when I took them apart. I guess I shoulda checked it out while I had them apart. I took my time cleaning and setting the carbs but got excited when it was time to put the bowls on and fire her up. She runs really good now, I just hate to take her back down but I cant have my son riding a fire hazard. Thanks for the help! :)

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