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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 12592
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Riding mower (L-120) has only one cylinder working. getting

Customer Question

riding mower (L-120) has only one cylinder working. getting spark on both plugs and can drive mower, but not enough power to mow with.
JA: What's the make and model of the mower? And can you guesstimate how old it is?
Customer: john Deere L 120 about 12 years old
JA: Do you plan on doing the work yourself?
Customer: Maybe
JA: Anything else we should know to help you best?
Customer: What is the problem, a bad piston?
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Small Engine Technician about your situation and then connect you two.
Submitted: 4 months ago.
Category: Small Engine
Expert:  K. Wiggins replied 4 months ago.

Hello, it could be

1. Bad piston

2. Bad rings

3. Valve issue

Do you have a compression gauge handy?