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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28902
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have a deere 345 lawn tractor, starts but popping

Customer Question

I have a john deere 345 lawn tractor , starts but popping erratically and not at full power . mower had started fine and was sitting and running at low speed when all of a sudden started running rough , cleaned plugs , removed and cleaned carburetor bowl , still the same , will start , does not pop when idling but does when throttle is increased and bogs down when mower is engaged.
Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.

Run cylinder check... Loosen the spark plug wires, and with engine idling, remove one wire at a time.

Expert:  Curtis B. replied 2 years ago.

If engine dies, when one is removed, the opposite cylinder is not firing.

Expert:  Curtis B. replied 2 years ago.

Check for for spark and compression.