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Engine dies after chopping throttle

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69F100
Dave De
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Engine dies after chopping throttle Empty Engine dies after chopping throttle

Post  tconnection May 14th 2016, 1:38 pm

What could the problem be when my engine dies upon deceleration? It starts back up though.
Thanks

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Post  dfree383 May 14th 2016, 1:55 pm

Running out of fuel, flooding because of slosh?
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Post  Dave De May 14th 2016, 1:57 pm

Vacuum leak
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Post  supervel45 May 14th 2016, 2:00 pm

dfree383 wrote:Running out of fuel, flooding because of slosh?

Second that. If you are running a Holley check for missing slosh tubes front and rear.

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Post  tconnection May 14th 2016, 2:16 pm

Ok it's a 1250 qft. It don't seem to like the floats exactly half way so I have them a tad under half way. This carb should have whatever is needed but I'm gonna make sure. Plus I want to send it some where to be set up for my engine or trade it for a 1450.
Thanks

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Post  supervel45 May 14th 2016, 3:02 pm

tconnection wrote:Ok it's a 1250 qft. It don't seem to like the floats exactly half way so I have them a tad under half way. This carb should have whatever is needed but I'm gonna make sure. Plus I want to send it some where to be set up for my engine or trade it for a 1450.
Thanks

I have always set my fuel level at the bottom of the sight plug or just a tad higher. Of course I was not burning the same amount of gas as a lot of the Big Inch High HP Guys around here are, so maybe you need them in the middle to keep up fuel supply on a pass with a single quad.

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Post  69F100 May 14th 2016, 3:02 pm

Dave De wrote:Vacuum leak

I have had a small vacuum leak on my 69 do that before.
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Post  crittersf1 May 14th 2016, 4:47 pm

Vacuum leak will make you chase your ASS over this problem
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Post  tconnection May 14th 2016, 4:57 pm

Im gonna lower the floats some. To have a vac leak I think the intake will auctually have to be cracked cause its sealed and the carb is tight. With my floats to high at idle it runs rough. I'm gonna lower them and do new plungs. Thanks for all info. And I'm still listening.

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Post  larry552 May 15th 2016, 12:07 am

running out of fuel
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Post  crittersf1 May 19th 2016, 3:06 pm

Did you fix it?
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Post  tconnection May 19th 2016, 6:54 pm

No i haven't checked it any further yet. Im blowing through the converter so that gotta get taken care of before I test it again. Do you have a glide or good case to sale?
Thanks

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Post  supervel45 May 19th 2016, 7:55 pm

Might want to check the spring tension or lack of on your floats also. Fuel pressure too.

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