Gas cap sealing

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Skip
Posts: 231
Joined: Mon Apr 26, 2004 11:18 pm
Bikes: 48 pan
81 shovel
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Location: WV

Gas cap sealing

#1

Post by Skip » Thu Nov 06, 2008 8:33 pm

Hey guys...let me bounce one off you...old tanks, 48...new paint...new caps last September...leaking/seeping down neck from under caps...new seals purchased last september put on...still leaking...took razor blade to paint under cap...still leaking...should I buy new caps or new seals again? Where to buy good caps?...or what else could it be??? should both be vented?? left one is non vented now...Thanks Skip



VPH-D
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Joined: Tue Feb 01, 2005 1:00 am

Re: Gas cap sealing

#2

Post by VPH-D » Fri Nov 07, 2008 10:21 am

If the tanks are really 48, both caps should be vented. Aftermarket tanks that use a gas cock in the left tank use a non vented cap on the left tank. The left tank usually will go into a vacuum with a non vented cap which goofs up the gas flow pretty well.
VPH-D

57pan
Posts: 230
Joined: Tue Aug 10, 2004 5:11 pm
Location: Michigan, USA
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Re: Gas cap sealing

#3

Post by 57pan » Fri Nov 07, 2008 5:27 pm

If the cap turns all the way to the stop without much resistance then maybe you need a thicker seal. I found some flat rubber at the hardware store (about 6" square) that came in a couple of different thicknesses and used some of that to make my own gas cap seals.

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