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lowN2slo
Samba Member
Joined: September 21, 2008
Posts: 50
Location: Canada
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 Posted: Fri Jul 20, 2018 8:59 pm Post subject: Carb leaking Gas.. |
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So long story short, my 30 pict 1 carb was leaking gas, throttle bushings I thought. Had a rebuild done, they said bushings were changed, carb looked beautiful when I got it back. All mounted up, still have a few drops of gas that appear under accelerator cable AFTER shut off. Only time it happens. I will call the company back that did the rebuild. But need advice on where else it could be leaking from. Tks! Sean
‘67 beetle for reference |
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Danwvw
Samba Member
Joined: July 31, 2012
Posts: 8892
Location: Oregon Coast
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| Posted: Fri Jul 20, 2018 9:09 pm Post subject: Re: Carb leaking Gas.. |
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Well if there is a problem with the gas boiling in the carb after shutdown the bushing may not fix that. But yeah, you would think it would not leak that much. Check fuel pressure on a cheap vac gauge that will also measure 3 psi pressure. Could be a fuel pump problem. Pressure should stay around 2.5 PSI. Also if you haven't checked the carbs gas float level and the needle valve operation for not leaking through, do that. Probably just install a new needle valve, Could be the float it's self is gas logged.
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths! |
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bluebus86
Banned
Joined: September 02, 2010
Posts: 11075
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| Posted: Sat Jul 21, 2018 8:33 am Post subject: Re: Carb leaking Gas.. |
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A drip there is indication fuel is still flowing, make sure float is not leaky, completely submerge float in pot of hot water, just below boiling point. if bubbles emit from float, it is shot, even if it still floats. dont test in cold water, must be hot.
check float bowl level with a good leak free float, adjust as needed.
also please see link below on engine fires and safety wires. all Bugs need this addressed.
Bug On!
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Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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Dkwautounion
Samba Member
Joined: July 31, 2017
Posts: 178
Location: Socal
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| Posted: Sat Jul 21, 2018 12:18 pm Post subject: Re: Carb leaking Gas.. |
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| I was thinking float stuck or not sealing right . |
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lowN2slo
Samba Member
Joined: September 21, 2008
Posts: 50
Location: Canada
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| Posted: Sat Jul 21, 2018 6:35 pm Post subject: Re: Carb leaking Gas.. |
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Tks for the responses! I will investigate all.
Sean |
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lowN2slo
Samba Member
Joined: September 21, 2008
Posts: 50
Location: Canada
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| Posted: Mon Jul 23, 2018 5:08 am Post subject: Re: Carb leaking Gas.. |
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| Float was replaced with new, everything new inside carb.. where do I go from here? Take carb back? |
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Herrbern
Samba Member
Joined: May 04, 2008
Posts: 349
Location: Luxembourg, Europe
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| Posted: Mon Jul 23, 2018 8:50 am Post subject: Re: Carb leaking Gas.. |
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| Danwvw wrote: |
| Well if there is a problem with the gas boiling in the carb after shutdown the bushing may not fix that. But yeah, you would think it would not leak that much. Check fuel pressure on a cheap vac gauge that will also measure 3 psi pressure. Could be a fuel pump problem. Pressure should stay around 2.5 PSI. Also if you haven't checked the carbs gas float level and the needle valve operation for not leaking through, do that. Probably just install a new needle valve, Could be the float it's self is gas logged. |
How to cure a boiling carburator ? |
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