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WD runs 10 minutes, then quits

P

ProRen

Member
I have an AC WD. Engine was rebuilt about 15 years ago, and has maybe 200 hours on the rebuild. The tractor was sitting without use for about 1 month. I was unable to get it started, so changed out points and distributor cap, set timing, and seemed to being going just fine. The tractor will run for 10 minutes pulling a mower, then bogs down and shuts down. choking engine accelerates the shutdown. No excess smoke from the stack (white or black).

Has been very dependable over the years, but a real pain here lately.

Any suggestions out there?
 
Time to do some simple trouble shooting.

#1 fire it up and run it till it dies. Then
#2 check for spark and make sure you have a good blue/white spark tha twill jump a 1/4 inch gap or more at the center wire of the cap and at all 4 plug wires. If you have good spark go to #3 if try a hot wire if you have spark when hot wired then the problem is from the coil back to the battery and could be a bad switch If no spark hot wired did you replace the condenser if you did pull it out and put the old one in good chance you got a bad new condenser.
#3 pull the carb drain plug and make sure you have a good steady flow of gas that will fill a pint jar in under 3 minutes
 
Do you have an inline filter in the gas line? That's about the length of time it takes for one of those things to vapor lock.
 
(quoted from post at 12:57:08 11/20/16) Yes. I actually removed the tank and flushed it completely. I have good fuel flow to the carb.
Click to expand...

Define "good flow to the carb" Your definition may not agree with the one accepted here. I have had "good flow" taper off to a drip waaaay before ten minutes.
 
If you cleaned fuel system and have good fuel flow to carb. I would look at condenser or coil. If you could get to running and have it quit
on you again get off and check coil. If the coil is hot to touch it needs replacing.
 

Sounds like a bad coil to me...runs until the coil gets hot and craters...then after it cools off a bit runs again(until coil gets warmed back up)
 
If the coil is good, check the ignition switch. They get rusty, and loose
causing intermittent firing.
 
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