But when the excess oil moves from cylinder to carburetor, there is no way out other than passing through the exhaust pipe. My Lawn Mower Is Blowing Blue Smoke, What Does This Mean? Thank you for the update. I started the mower and as soon as i did i noticed white smoke coming out of the front exhaust, thought nothing of it, then within 15 seconds and about 20 feet of cutting i was engulfed with a lot of white smoke, so i stopped the mower and noticed oil … It started and blew out a lot of white smoke and oil is spewing from the exhaust. I have an old MTD push mower with a Briggs 3.5 hp motor that I use at the camp. Oil was filled to correct level and it used 1/4" on dipstick in about 20 minutes. If it is coming out of the exhaust pipe then the engine is burning the oil much fuel if it is be sucked into … Hasn't been used in a couple months and noticed today the the could not pull the rope to start. Here is my dilemma: Craftsman 4.5HP 22 inch cut push mower is smoking and dripping oil out of the muffler. I did pull the plugs and noticed oil fouling on one and carbon build up on the other. These include overfilling the crankcase, or spilling oil on other parts of the mower … The air filter was dirty and was replaced with a new one with no change. This is after old oil being drained, new oil in, new spark plug, … Any suggestions First my lawn mower didn't start had gas gap open ,tipped it a little then I I started lawn mower , muffler spitting oil, filter dirty with oil. ok, so i go out side this evening to cut the grass, i have a Toro Recycler self propelled with a Briggs & Stratton 190cc engine. I was having problems getting mower to start. Compression wet/dry both 120 psi. This is the first small engine ive ever really torn apart, so its a learn as I go experience. i'm fixing my neighbors lawn mower for him, i thought it would be the usual; punky gas, bad plug, clogged filter or any combination of the 3. oops, my bad i pulled the cord once and it started leaking oil out of the exhaust. It is the leading cause of the lawn mower blowing white smoke. DUDES!!!! when I turn the blade by hand it goes real hard and oil comes out of the exhaust. Is the white smoke coming out of the exhaust pipe or is the oil leaking onto the outside of the muffler. One of the exhaust manifold bolts was broken and oil was coming out there also. I noticed that the oil level is just over full. I get a little grey smoke when I fire it up, but I wouldn't call it excessive. What Makes a Lawn Mower Smoke Blue? Therefore, the oil makes its way through the air filters and exhaust pipe and finds its way out from the exhaust manifold. Got another battery and replaced the plug which was all black. Craftsman ZTS 6000 with model 331677 Platinum engine started smoking intermittently and is leaking oil. !thanks it worked. Took muffler off cleaned with w 40 first,filled with windex shaked cleaned then I water hosed down until no foam was form.but it together and then start it on again. Hey Guys, Brand new to the forum...thanks for having me. A homeowner can usually identify the reason for a smoking lawn mower … Oil leaking through a lawnmower's air filter has several possible causes. They were both new. it's a murray mower with a … A: Your lawn mower can emit smoke for numerous reasons—many of which don’t require the services of an expert. It looks like the leak is coming from the fuel pump.?? The causes of blue smoke emitting from the exhaust of your lawn mower are pretty much the same as white smoke. Yes, oil is leaking from the exhaust manifold gasket on both heads. 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