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06-21-2022, 03:16 PM | #21 | |
Senior Member
Join Date: Apr 2021
Location: Central Illinois
Posts: 490
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Re: Is it electrical or gas?
Quote:
Gary, now that you're sure its fuel, I can add one last idea. My coupe had the 'start, run a short time and die' problem too. I had removed, cleaned and measured the jets. I eventually found that the cap jet was leaking at its base where the gasket is. I discovered this by using my longest finger and touching the jets to find out why the carb intake area was wet. I had a small camera for the phone and ultimately looked inside. I switched from the little red gaskets to the black ones from Brattons and the leaking stopped.
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06-21-2022, 09:41 PM | #22 |
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Join Date: May 2022
Location: Collinsville, OK
Posts: 50
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Re: Is it electrical or gas?
That will be something for me to check. Thank you
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06-22-2022, 06:14 AM | #23 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Is it electrical or gas?
To get all the passages clean I use Deep-Creep spray and compressed air to make sure all are clear, even if its been soaked in cleaner.
Its good to remove all the jets, but, if I think one will break then I leave it in. Once you get good air flow thru everything then it should be go to go. |
06-27-2022, 12:10 PM | #24 |
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Join Date: May 2022
Location: Collinsville, OK
Posts: 50
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Re: Is it electrical or gas?
Hopefully I found the problem. I was going through and changing the jets with new ones. When I measured the old main jet it was between a #76-78. My search showed that it should be from #63-64. After changing it the problem seems to have gone away. time will tell. I have attached pictures of the old jet. It has a 11 stamped on it.
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06-27-2022, 12:55 PM | #25 |
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Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,042
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Re: Is it electrical or gas?
My notes tell me that a #11 jet is .0216535", the main jet should be a #20, .03937"
The idling jet should be a #11 See: http://modelabasics.com/carb%20basics%202.htm Also: https://www.polysource.ca/drill-bit-...SAAEgJhj_D_BwE
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If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! Last edited by katy; 06-27-2022 at 01:06 PM. Reason: Addition |
06-27-2022, 01:07 PM | #26 |
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Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Re: Is it electrical or gas?
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06-28-2022, 10:48 PM | #27 |
Senior Member
Join Date: Nov 2018
Location: Farmington MI
Posts: 284
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Re: Is it electrical or gas?
First thought ... the carb float is sticking up and'/ or the needle is sticking closed
Joe B |
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