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09-03-2012, 04:20 PM | #1 |
Registered User
Join Date: Aug 2012
Location: Santa Rosa, Ca
Posts: 30
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Carb Leaking
Hi,
It was suggested I post a new thread for this by another user. I have a '69 C30 I just picked up and am trying to sort before harvest this fall. Current issues: 1- Was running really rich. When I opened up the hood, I noticed the fuel filter looked like a really old one. Also, I noticed a fuel leak coming from the back secondary(?) throttle control. Not sure what brand carb this is. Researching this site, it sounds like a possible float issue, but not sure, and quite frankly not sure of the process for taking this apart to check. Here is a pic of where it is leaking. 4 bbl - 350 - guessing Edelbrock Any help/instructions on the process of taking this apart and putting it back together to check the float are appreciated. Last edited by Fogline69; 09-03-2012 at 04:22 PM. Reason: add picture |
09-03-2012, 05:20 PM | #2 |
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Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,229
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Re: Carb Leaking
I need a photo of the whole carb to identify it. If it leaks out the throttle shaft it is a needle-seat/float problem. It looks like it might be a Holley. If so the needle & seat can be removed without removeing or disasemblying the carb.
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09-03-2012, 05:33 PM | #3 | |
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Join Date: Aug 2012
Location: Santa Rosa, Ca
Posts: 30
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Re: Carb Leaking
Quote:
Here is a pic of the front. The numbers on the front are F3 9635 S Thanks |
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09-03-2012, 07:36 PM | #4 |
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Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Carb Leaking
It's a 625 cfm carter AFB. Fuel pressure sensitive. THey don't like more than 5.5 psi.
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09-03-2012, 10:13 PM | #5 |
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Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,708
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Re: Carb Leaking
And it looks long past due for a rebuild from the looks of things. That is actually the carb that Edelbrock carbs were modeled after.
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09-03-2012, 10:26 PM | #6 |
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Join Date: Aug 2012
Location: Santa Rosa, Ca
Posts: 30
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Re: Carb Leaking
Thank you for the information. I am wondering whether it just makes more sense to buy a rebuilt Edelbrock on ebay for $150 or something rather than messing with it. Seems like it may drastically improve the performance of the engine and hopefully cut down the emissions. Any thoughts?
Thanks again to all! |
09-04-2012, 09:09 AM | #7 |
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Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Carb Leaking
If you're gonna get another one just bite the bullet and get a new one.
Or get a rebuild kit and learn how to rebuild it. You'll never learn how things work if you just do the remove and replace way. |
09-04-2012, 02:33 PM | #8 | |
Registered User
Join Date: Aug 2012
Location: Santa Rosa, Ca
Posts: 30
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Re: Carb Leaking
Quote:
As it turns out, taking the top off and cleaning it a bit plus adjusting the choke seems to maybe have taken care of the problem. We will see once I get it really up to temp. Thanks for all the advice. I suspect either some of the linkage was so filthy that it was holding things open or there was dirt in where the pins are. The floats both floated. Perhaps we can squeeze some more life out of this thing. |
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