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WD Timing Without a Crank |
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 20199 |
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Bad coil in the magneto.
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WF owner
Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 4598 |
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It sounds to me like it's a problem that is related to something reaching a certain temperature or possibly a fuel restriction.
Have you checked fuel flow at the carburetor? Doc is probably right. If you need a new coil, I usually get parts from Brillman. |
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WDStudent
Bronze Level Joined: 22 Feb 2020 Location: Indiana Points: 16 |
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Thank you Doc and WF. I'll get on it next weekend.
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DrAllis
Orange Level Access Joined: 12 Sep 2009 Points: 20199 |
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I prefer to diagnose the problem before throwing new parts on it. If it's the coil, the spark will be weak, very weak or maybe not at all. If it restarts cold, pull off a plug wire while running and see how far it will jump a spark to the engine block/head. When it warms up enough to start to falter, recheck and see if the spark intensity is the same or weaker. If you haven't had the coil replaced, it's a fairly good bet it needs it as this is what they do when they get old.
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WDStudent
Bronze Level Joined: 22 Feb 2020 Location: Indiana Points: 16 |
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Thanks. The mag was just rebuilt last month, which included a new coil and points. I can still check the spark as Doc suggested, but would appreciate any other ideas. Thanks.
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chaskaduo
Orange Level Joined: 26 Nov 2016 Location: Twin Cities Points: 5200 |
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Wasn't there a post about a collapsing hose or gas tank vent clog doing something like this to someone early last year?
Edited by chaskaduo - 10 Mar 2020 at 2:34pm |
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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WF owner
Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 4598 |
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There are a lot of inferior Chinese made parts out there. Just because it's new, doesn't mean it's good. I went through a bunch of condensors on one of my (distributor) WD45 a couple years ago. One wouldn't even start the tractor.
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