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04-25-2017, 02:55 PM | #1 |
Senior Member
Join Date: Jul 2014
Location: NW Pa./Sc.
Posts: 252
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Spark plugs carbon fouling
I was just talking to a fellow that has a 29 Speedster for sale. He says after about 100 miles the 1st and fourth spark plugs foul. Two and three are OK. It's carbon fouling-not oil. He's running a MIller High Speed high compression head and a Stromberg 81 carb with an electronic ignition. He can't figure out why it is just the first and fourth plugs that foul. Any thoughts or is there anything else I should be asking? Thanks
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04-25-2017, 02:59 PM | #2 |
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Join Date: May 2010
Location: Central, IL
Posts: 3,968
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Re: Spark plugs carbon fouling
is he running too rich? does it run smooth and can low idle without issues?
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04-25-2017, 03:06 PM | #3 | |
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Join Date: May 2010
Location: NC
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Re: Spark plugs carbon fouling
Quote:
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04-25-2017, 03:31 PM | #4 |
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Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
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Re: Spark plugs carbon fouling
Smit
Dont buy it |
08-18-2017, 05:39 PM | #5 |
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Join Date: May 2010
Location: Vancouver, WA
Posts: 22
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Re: Spark plugs carbon fouling
I had the same problem with #1 cylinder only under my Serr-Miller head. I tried everything, nothing worked except very hot plugs fouled in #1 more slowly. The solution was to change the carb/manifold to a Weber 32/36 with new manifold. No more fouling, lots more power now. I think the Winfield SR/winfield manifold was just giving the first cylinder a lot richer mixture than the other 3 cylinders, can't see how but no other explanation seems reasonable.
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08-19-2017, 12:53 PM | #6 |
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Join Date: May 2010
Location: now Kuna, Idaho
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Re: Spark plugs carbon fouling
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08-19-2017, 04:22 PM | #7 |
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Join Date: Jun 2014
Location: Land of Lincoln
Posts: 3,131
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Re: Spark plugs carbon fouling
You will not get a answer from him here, he started ford vintage!
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