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#1 |
Registered User
Join Date: Dec 2012
Location: Ohio
Posts: 28
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How to adjust choke pull-off on Holley style Summit carb?
I have a Summit SUM-M08600VS that is acting up. Quite often when starting, it will not start at all. (unless I depress the pedal and hold it that way)
I suspect it is flooding, and think that it's due to lack of air. Here's my carb: http://www.summitracing.com/parts/sum-m08600vs I've read that it's just a holley knockoff. I have reset the electric choke housing to the 'factory' condition (index marker), but as I understand it, this shouldn't matter anyway. This is a problem during initial startup. Some old holley guides talk about using a bent paper clip to adjust the "Choke Qualifying adjustment", but I don't think that applies to my carb?? Pic attached. I'm suspecting vacuum leak or adjustment problem. Am I on the right track here? Is there an easy way to check the choke pull-off operation without the engine running? I.E pulling off one of the vacuum hoses and attaching to a vacuum tool? I'm very new to carbs and sort of learning on my own here. Thanks!
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1978 K10 |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,536
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Re: How to adjust choke pull-off on Holley style Summit carb?
When you finally get it running, where is the level of the gas in the site glass?
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#3 |
Registered User
Join Date: Dec 2012
Location: Ohio
Posts: 28
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Re: How to adjust choke pull-off on Holley style Summit carb?
About 1/2 full.
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1978 K10 |
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#4 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,536
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Re: How to adjust choke pull-off on Holley style Summit carb?
Lower the fuel level to 1/4 of the sight glass on both bowls. Might stop your flooding and starting problem.
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#5 |
Registered User
Join Date: Dec 2012
Location: Ohio
Posts: 28
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Re: How to adjust choke pull-off on Holley style Summit carb?
Ok thanks! I'll give that a try.
__________________
1978 K10 |
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