Fuel in my vacuum advance can?? - Team Camaro Tech
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post #1 of 6 (permalink) Old May 6th, 10, 03:03 PM Thread Starter
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Kip
 
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Fuel in my vacuum advance can??

I am getting fuel in my vacuum advance can... Is that normal? If not, what could cause this to happen? I am running a new Speed Demon 650 carb. The vacuum line is hooked up to the full vacuum port on the carb, as recommended by BG, as well as many others.. I have had the distributor out a couple times... and it always has fuel in the can...
I appreciate any thoughts on on the matter..

Thanks,

Kip
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post #2 of 6 (permalink) Old May 6th, 10, 08:21 PM
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Re: Fuel in my vacuum advance can??

Float levels are to high and make sure the fuel pressure is all good.

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post #3 of 6 (permalink) Old May 9th, 10, 08:32 PM
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Re: Fuel in my vacuum advance can??

Fuel can migrate down the vacuum advance line under normal conditions especially if the line runs downhill from the vacuum port to the distributor.

An effective trick is to use a section of metal tubing and bend a loop in it like an upside down "U" so the line runs uphill a few inches before going down to the distributor. The same trick can be used for an auto trans vacuum modulator.

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post #4 of 6 (permalink) Old Jun 2nd, 10, 03:05 AM
Ed
 
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Re: Fuel in my vacuum advance can??

A while back I had the same issue. I was told to stop overfilling my gas tank (read not to "top it off"). When the nozzle clicks off near the full mark, call it "good". Problem cleared right up. try it.

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post #5 of 6 (permalink) Old Jun 9th, 10, 09:33 AM
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Re: Fuel in my vacuum advance can??

Quote:
Originally Posted by red67camaro View Post
Fuel can migrate down the vacuum advance line under normal conditions especially if the line runs downhill from the vacuum port to the distributor.

An effective trick is to use a section of metal tubing and bend a loop in it like an upside down "U" so the line runs uphill a few inches before going down to the distributor. The same trick can be used for an auto trans vacuum modulator.
So that's why my stock modulator pipe has an upward curve behind the TB. And I thought it was to access the dizzy bolt.

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post #6 of 6 (permalink) Old Jun 9th, 10, 02:09 PM
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Re: Fuel in my vacuum advance can??

Quote:
So that's why my stock modulator pipe has an upward curve behind the TB. And I thought it was to access the dizzy bolt.
Damn I have for yrs looked abstractly at the VA and always thought lazy buggers not making them straight....
never had a problem of fuel in the VA, use manifold vac off the valley cover....and running LPG suppose it wouldnt matter lol

My Spelling is not incorrect...it is creative

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