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Old 08-01-2018, 08:39 PM   #1
Steeveedee
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Re: heard this one yet????

OK, looks like you got a vacuum advance issue corrected, but still may have a vacuum leak. Can we get a clip of what it sounds like running?
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'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

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Old 08-02-2018, 08:23 AM   #2
stevenfromtexas
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Re: heard this one yet????

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Originally Posted by Steeveedee View Post
OK, looks like you got a vacuum advance issue corrected, but still may have a vacuum leak. Can we get a clip of what it sounds like running?
i'll try. is posting a video here the same as a picture?
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'67 SWB, 250ci, 3OTT.......this is my first build......
I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"
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Old 08-02-2018, 01:02 PM   #3
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Re: heard this one yet????

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Originally Posted by Steeveedee View Post
OK, looks like you got a vacuum advance issue corrected, but still may have a vacuum leak. Can we get a clip of what it sounds like running?
see if this works.....

https://youtu.be/NKqNXTfXxNY

i tried the propane trick metalDoc mentioned, no dice....
i've played with the fuel/air mix....no change either
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I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"
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Old 08-02-2018, 01:19 PM   #4
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Re: heard this one yet????

Weak fuel pump?
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Old 08-02-2018, 01:23 PM   #5
stevenfromtexas
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Re: heard this one yet????

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Originally Posted by Metaldoc View Post
Weak fuel pump?
...even though it accelerates great? just curious
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'67 SWB, 250ci, 3OTT.......this is my first build......
I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"
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Old 08-02-2018, 02:23 PM   #6
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Re: heard this one yet????

When you accelerate you increase RPM on the pump it could be weak at low RPM. Just a thought.
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Old 08-02-2018, 02:25 PM   #7
stevenfromtexas
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Re: heard this one yet????

hmmmm....ok, you got me thinkin' now....

and at idle it's not asking for that much gas....is this your thinking? (not being a dick, just seeing if this is what you think)
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'67 SWB, 250ci, 3OTT.......this is my first build......
I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"
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Old 08-02-2018, 03:56 PM   #8
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Re: heard this one yet????

question....

the "C" shaped linkage at the bottom of the carburetor, connecting the accelerator pump to the throttle body, can that be adjusted/tweaked/bent slightly to help with anything I've got going?
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'67 SWB, 250ci, 3OTT.......this is my first build......
I wonder if my grand kids will say, "I would give anything to have my grand dads 2005 Chevrolet Z71"
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