Ask Your Question

Angie's List Answers is the trusted spot to ask home improvement and health questions and get answers from service companies, health providers and consumers. For ratings and reviews on companies in your area, search Angie's List.

Top 30 Days Experts
Rank Leader Points*
1 kstreett 240
2 Guest_9020487 110
3 Guest_9190926 105
4 GoldenKid 100
5 ahowell 95
6 KnowledgeBase 95
7 skbloom 80
8 Guest_98024861 70
9 Guest_9311297 70
10 Guest_9400529 70

*Updates every 4 hours

Browse Projects By Category

Question DetailsAsked on 7/30/2017

My lawn mowers oil smells like gas also the engine sputters a little bit

When I checked the oil in my lawn mower I noticed that the oil smelled like gas. The mower also sputters a little bit . I'm not sure if these problems go hand in hand but I'm not sure what's causing it. I hope my mower isn't gonna crap out on me and that this is an easy inexpensive fix. Any help would be greatly appreciated

Do you have the same question? Follow this Question

1 Answer


While it could be leaking intake valve or a timing issue, my first guess would be your air filter is dirty - so the engine is running very rich (not enough air for the amount of fuel it puts into the engine, so excess fuel is getting into the oil and thinning it out.

Another possibility - an ignition problem so sometimes the engine is missing, putting raw gas through the cylinder, some of which gets past the rings. Check the plug wire metal ring (up inside the rubber boot) is not broken, and that it presses tightly onto the top of the plug.

A cracked or broken plug or crudded up plug can also do this - pull the plug and check for oiling, wrong gap, burnt and cracked ceramic round the center electrode, etc.

Less common cause - broken/shorting plug wire, failing ignition system, automatic choke or governor wavering or failing, loose ignition impulse block (armature) causing improper distance from flywheel magnet, worn/broken piston ring(s).

You can find Youtube videos and blogs and such on fixing any of these problems - or buy a Chiltons or similar small engine repair manual covering your manufacturing year and engine make for complete diagnosis and repair instructions. About $15-20 box store or Amazon, $2-10 used through Amazon.

After problem is solved, I would change the oil because if it smells like gas it is probably significantly thinned and broken down by the gas.

Answered 3 years ago by LCD

Related Questions

Terms Of Use
Privacy Policy