-
Master
978 Answers
- Posted on May 28, 2015
Re: Why does my 318 lawn mower back fires
Charlene: According to https://www.briggsandstratton.com/us/en/support/faqs/engine-backfire-afterfire "
What causes a small engine backfire & how do I fix it?
Backfire typically occurs when the engine is decelerated rapidly.
Common Causes of Backfire:
- Lowering engine speed too fast
- Gasoline, which contains higher blends of alcohol
- Carburetor adjustment set too lean
- Muffler construction can induce backfire
- Higher than normal engine temperatures
- Some carburetors can induce backfire due to the sensitivity of internal transitional passages
(This condition cannot be corrected).
Possible Fixes for Backfiring:
- Lower engine speed slowly
- Follow small engine fuel recommendations and/or switch to brands with low or no alcohol
- Adjust carburetor for optimum performance
- Inquire with equipment manufacturer about increasing air volume to decrease engine temperature"
Charlene: I hope that helps! :)
Charlen
×