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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26499
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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JD x320 after about 30 minutes mowing it dyes, then pops,

Customer Question

JD x320 after about 30 minutes mowing it dyes, then pops, motor turns over but takes a while to restart, tried gas cap trick no difference, once it does start it puffs a little dark smoke then runs fine a few minutes then dyes again HELP
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.

First thing, run a cylinder test. Loosen the spark plug wires, and with engine idling, pull one wire off at a time. If engine dies when either is removed, the opposite cylinder is not firing.

Expert:  Curtis B. replied 1 year ago.

Check for spark and compression.

Expert:  Curtis B. replied 1 year ago.

If cylinders are ok, then check the solenoid in the carburetor. It plugs the main jet when it is closed. It has to open as soon as the key is turned on, and has to stay open.

Expert:  Curtis B. replied 1 year ago.

Best test is to remove it and plug the hole for test.

Expert:  Curtis B. replied 1 year ago.

These are the two things to begin with.