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friday
Samba Member
Joined: September 24, 2006
Posts: 10
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 Posted: Fri Mar 31, 2023 2:38 pm Post subject: Pilot Jet Question |
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I have an original '56 oval with the original carb. Seems every time I drive it, i have to remove the pilot jet and clean or it will not idle.
Once I clean it, no problems until ti sits for awhile, the I have to clean it again. Does anyone have the same problem? If so, besides cleaning it, is there an additive you are using in the gas? I tried Marvel Mystery Oil and am using Stable for the gas. That does not seem to help. I am open for ideas.
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Bub
Samba Member
Joined: June 10, 2004
Posts: 1151
Location: Central Washington
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| Posted: Fri Mar 31, 2023 7:05 pm Post subject: Re: Pilot Jet Question |
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It's not the cleaning of it that's helping the issue, I think it's the modern fuel.
Next time it's acting up and about to die crack the jet open just a tiny tiny bit, see if it runs and idles fine with the jet just very barely not fully seated.
I bet it works great that way. I've used some petroleum safe nylon tape to seal the threads and just left the jet 'un-seated' the tiniest amount and it seemed to fix that problem. I think it's the ethanol in the fuel.
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VW_Jimbo 
Samba Member
Joined: May 22, 2016
Posts: 9955
Location: Huntington Beach, CA
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| Posted: Sat Apr 01, 2023 11:08 am Post subject: Re: Pilot Jet Question |
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| Bub wrote: |
It's not the cleaning of it that's helping the issue, I think it's the modern fuel.
Next time it's acting up and about to die crack the jet open just a tiny tiny bit, see if it runs and idles fine with the jet just very barely not fully seated.
I bet it works great that way. I've used some petroleum safe nylon tape to seal the threads and just left the jet 'un-seated' the tiniest amount and it seemed to fix that problem. I think it's the ethanol in the fuel. |
x2! I had to use this “fix” on several cars over the years for all years! Just a tiny bit open. Heck sometimes, you could crack them open, and twist the jet back in and it self cleaned enough to reseat the jet! But I would still remove, wrap and reinstall them just shy of a full seating! Easy fix!
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friday
Samba Member
Joined: September 24, 2006
Posts: 10
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| Posted: Sat Apr 01, 2023 11:54 am Post subject: Re: Pilot Jet Question |
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| Thanks! I will give it a try. Lately, I have been carrying around an extra jet and wrench. |
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Dan22
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Joined: August 30, 2019
Posts: 465
Location: Battle Ground, WA
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| Posted: Sat Apr 01, 2023 12:51 pm Post subject: Re: Pilot Jet Question |
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You may have some loose corrosion in the fuel passages. Try some good but mild acidic cleaner like citric acid or I use phosphoric and it eats the corrosion. Be carefull though, it will eat the pot metal too, but it can make the carb look brand new.
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friday
Samba Member
Joined: September 24, 2006
Posts: 10
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| Posted: Mon Apr 03, 2023 3:01 pm Post subject: Re: Pilot Jet Question |
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| I plan to remove the carb and give it a sonic cleaning soon, Maybe that will help |
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