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Car bogging when I first hit the gas

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Old 02-17-2011, 04:54 PM   #1
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Car bogging when I first hit the gas

I took my car out for a spin today, it was 50*F out and I just couldn't wait..
I got out on to the rod, touched the gas pedal and it bogged down for about 2 seconds, then it smoothed out, did it again when I turned around in a driveway

Timing is at 6* BTDC
Holley 670
Chevy 350
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Old 02-18-2011, 12:25 AM   #2
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Re: Car bogging when I first hit the gas

Sounds like the pumpshot. Not sure how much you can do about it. The airgap intake will make the pumpshot a moving target, so the volume and duration tend to change with the ambient air temp.
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Old 02-18-2011, 06:08 AM   #3
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Re: Car bogging when I first hit the gas

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Originally Posted by dimented24x7 View Post
Sounds like the pumpshot. Not sure how much you can do about it. The airgap intake will make the pumpshot a moving target, so the volume and duration tend to change with the ambient air temp.
Guess it doesn't help it's just over freezing out..
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Old 02-18-2011, 06:08 AM
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