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Les Kerf 
Orange Level
Joined: 08 May 2020
Location: Idaho
Points: 790
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 Posted: 16 Jun 2024 at 2:33pm |
 rasman57 wrote:
... The shutting down and firing right back up is instructive to me for air infiltration that seems to reset once the engine stops... |
Disconnect the air filter
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rasman57
Silver Level
Joined: 12 Sep 2009
Location: Illinois
Points: 404
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Posted: 16 Jun 2024 at 3:22pm |
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Did that early on as well as restricting it a bit to determine vacuum. Plenty of vacuum. Open Carb without air filter does nothing as well.
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steve(ill)
Orange Level Access
Joined: 11 Sep 2009
Location: illinois
Points: 81335
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Posted: 16 Jun 2024 at 3:51pm |
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you say it happens when you HIT the throttle real fast... Im wondering if the governor is not set quite right and having touble keeping up...Then it might take a few seconds to get back into proper ........ not sure why it would happen only when HOT ... but something to consider..
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Like them all, but love the "B"s.
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Straanger
Bronze Level
Joined: 10 Dec 2019
Location: Michigan
Points: 39
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Posted: 16 Jun 2024 at 3:55pm |
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I would try running a new ethanol safe fuel line directly from the fuel tank to the carb inlet, eliminating all of the old fuel lines and give that a shot.
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Les Kerf
Orange Level
Joined: 08 May 2020
Location: Idaho
Points: 790
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Posted: 16 Jun 2024 at 8:42pm |
steve(ill) wrote:
you say it happens when you HIT the throttle real fast... |
That can happen with a bad coil wire, bad spark plugs or cables, and also with a distributor cap or rotor that has carbon tracking inside. Try running in total darkness and watch for fireworks.
Edited by Les Kerf - 16 Jun 2024 at 8:43pm
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modirt
Orange Level Access
Joined: 18 Jul 2018
Location: Missouri
Points: 7369
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Posted: 17 Jun 2024 at 9:20pm |
DiyDave wrote:
Check the coil, It can do the same thing as you describe... |
If a guy wanted to try a new coil and condenser for D15 Series II with 160 engine, is that a part number available from NAPA or some other auto parts store?
D15 I'm in charge of is doing something similar.
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AC720Man
Orange Level
Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 4926
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Posted: 17 Jun 2024 at 9:26pm |
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We have tried our local Carquest, took 3 sets of condensers to get a good one. Went back to AGCO because I got tired of the crap I was getting locally. Our local NAPA hasn’t been any better as a matter of fact they don’t carry much for tractors anymore. I don’t even check with them anymore. Maybe your NAPA store will be better. Rebuilt our series II D15 2 years ago.
Edited by AC720Man - 17 Jun 2024 at 9:27pm
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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