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Old 06-07-2020, 05:17 PM   #1
53_mercLuke
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Default 1953 Flathead acceleration issue again

Last week I posted I had acceleration issues on my 1901 yeapot carb. I moved the accelerator pump adjustment to the right from the middle hole and also found the diaphragm for the power vavle was shorter so I changed it out. Took it for a drive and ran awesome for the most part but my volt meter was pegged and it would spit and sputter when it was so I found the alternator was bad, had it rebuild and put on. Now its charging fine but the acceleration issue is back now. I didn't do anything to the carburetor from last week so I don't know what happened. Any ideas? I'm just getting frustrated and confused. Thanks
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Old 06-07-2020, 05:30 PM   #2
JSeery
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Default Re: 1953 Flathead acceleration issue again

Multiple issues can be like that. Any electrical parts damaged by the alternator problem? The old standby is start with the condenser.
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Old 06-07-2020, 06:10 PM   #3
A bones
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Default Re: 1953 Flathead acceleration issue again

How is your tank?
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Old 06-07-2020, 06:22 PM   #4
53_mercLuke
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Default Re: 1953 Flathead acceleration issue again

Its good and I replaced the fuel filter last week. I'm getting fluid to the carb and in the bowl
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Old 06-08-2020, 10:52 AM   #5
51 MERC-CT
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Default Re: 1953 Flathead acceleration issue again

Although you are getting fuel to the bowl, check the tightness of the glass bowl and the condition of the cork gasket.
Looseness or a cracked gasket can cause air to be sucked in and can cause stumbling etc.
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Old 06-08-2020, 04:56 PM   #6
Kurt in NJ
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Default Re: 1953 Flathead acceleration issue again

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Too high voltage can burn the points,
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Old 06-08-2020, 08:12 PM   #7
53_mercLuke
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Default Re: 1953 Flathead acceleration issue again

Quote:
Originally Posted by Kurt in NJ View Post
Too high voltage can burn the points,
The other weekend when I thought I fixed the issue but found my alternator bad the volt meter on the car read high but at idle it when back to 12 but then when I did a check on the system it wasn't charging at all. I thought about the points and everything but if it wasn't charging on my multimeter I don't think it was charging for awhile. My meter on the car is still the original with the wire running through it
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Old 06-09-2020, 04:54 AM   #8
51 MERC-CT
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Default Re: 1953 Flathead acceleration issue again

Quote:
Originally Posted by 53_mercLuke View Post
The other weekend when I thought I fixed the issue but found my alternator bad the volt meter on the car read high but at idle it when back to 12 but then when I did a check on the system it wasn't charging at all. I thought about the points and everything but if it wasn't charging on my multimeter I don't think it was charging for awhile. My meter on the car is still the original with the wire running through it
You are referring to a "volt meter on the car".
Last I knew, Mercury did not use a volt meter but an ammeter.
Just what do you have?
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Old 06-09-2020, 07:21 PM   #9
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Default Re: 1953 Flathead acceleration issue again

I ment an ammeter
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