How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Curtis B. Your Own Question
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
Type Your Small Engine Question Here...
Curtis B. is online now
A new question is answered every 9 seconds

I have an LT3800 mower the engine will backfire and continue

Customer Question

i have an LT3800 mower the engine will backfire and continue to backfire while it tries to run. i have changed ignition coil and changed the sheer key for timing. these changes made no diference. i don't know what else to check next, can you help
JA: What's the make and model of the mower? And can you guesstimate how old it is?
Customer: briggs and straton mod;13wc76lfo31 10112351 ser#1a290b80181 approx.6years old
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: no
Submitted: 3 months ago.
Category: Small Engine
Expert:  Curtis B. replied 3 months ago.

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Expert:  Curtis B. replied 3 months ago.

Yours numbers are for the mower, not the engine, what are the engine numbers? Example 31P777-01230B1. Have you ran a compression test?