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05-14-2021, 01:04 PM | #1 |
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Join Date: Sep 2020
Location: Syracuse, NY
Posts: 173
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Carb backfire when release accelerator
Now that the weather is nice, and the widows are down, I recently experienced an issue and looking to the experts. While accelerating, when I release the gas to shift from 1-2 or 2-3, I'm getting a pop or backfire from the carb. If I go real easy on the accelerator, and release at a low RPM during shifts, it doesn't do it, but it seems when I do try to accelerate harder to keep up with traffic and release for my shifts, I get the pop/backfire. I tried adjusting the timing while driving and no difference, but could it be I'm running too lean on the GAV?
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05-14-2021, 02:45 PM | #2 |
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Join Date: Apr 2021
Location: St. Augustine, Fl.
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Re: Carb backfire when release accelerator
Sounds like you might be to rich. If you accelerate hard you are pulling in more vacuum
which is pulling in more gas which is not being totally burned. Also you might want to pull your spark plugs to see if they are burning clean.
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05-14-2021, 06:23 PM | #3 |
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Join Date: Jun 2010
Location: San Antonio, Texas
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Re: Carb backfire when release accelerator
Back fire through the carb is a symptom of a lean condition.
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05-14-2021, 07:27 PM | #4 |
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Join Date: Mar 2012
Location: Ohio
Posts: 1,958
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Re: Carb backfire when release accelerator
I hate to ask this, but is the car timed backwards? Mine was when I bought it...
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05-14-2021, 09:08 PM | #5 |
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Join Date: Jan 2016
Posts: 2,093
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Re: Carb backfire when release accelerator
How can you time a car backwards?
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05-14-2021, 10:06 PM | #6 | |
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Location: Syracuse, NY
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Re: Carb backfire when release accelerator
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Quote:
I'll try turning the GAV CCW back to increase.. When I first bought it I didn't notice it but then thinking about it, after numerous posts, I spun it several times Clockwise to bring to a "zero" point, then back off. Good news was at the Zero point (hard stop) it just about stalled so I knew it did work and just didn't spin arbitrarily. Will let you know results. |
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05-15-2021, 08:24 AM | #7 |
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Location: Saint Cloud Mn
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Re: Carb backfire when release accelerator
Backwards?
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05-15-2021, 08:30 AM | #8 |
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Join Date: May 2010
Location: Long Island, NY
Posts: 3,463
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Re: Carb backfire when release accelerator
Adjust the carburetor with the GAV 1/4 turn open, and try this technique of driving with the GAV:
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05-15-2021, 08:32 AM | #9 |
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Re: Carb backfire when release accelerator
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