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JohnWD
Samba Member
Joined: June 26, 2025
Posts: 1
Location: Worcestershire
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 Posted: Thu Jun 26, 2025 11:56 am Post subject: H80/31PICT rebuild |
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I recently rebuilt my carb using a rebuild kit but the volume screw and o ring don't fit so I've reused the old one's. I get hardly and change in the tickover when adjusting the volume and bypass screws. I think the o ring might be leaking. I remember buying a rebuild kit a few years ago for the same carb and the volume screw in that kit were the wrong ones as well. Can anyone tell me the correct size of the o ring for this carb? It's got Bras under the type on the side of the carb so I assume it's not the original carb and I assume Bras is made in Brasil. My Campervan is a 1972 1600cc model.
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heimlich 
VWNOS.com
Joined: November 20, 2016
Posts: 7502
Location: Houston, Texas
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| Posted: Thu Jun 26, 2025 2:06 pm Post subject: Re: H80/31PICT rebuild |
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Just to point out for you that's an H30/31.
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borninabus
Samba R&D Dept.
Joined: May 18, 2006
Posts: 4729
Location: Arizona Highways
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| Posted: Sat Jun 28, 2025 1:06 pm Post subject: Re: H80/31PICT rebuild |
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it appears your carb still needs some cleaning.....
non-responsive screws could be indicative of manifold vacuum leaks and/or clogged passages inside the carb.
how do you have the throttle stop adjusted?
where are your vacuum hoses going and is what they are going to holding vacuum?
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