Anybody got an idea here? The last 2 times I've used my lawnmower it starts fine, within about 5 minutes it starts pouring white smoke from the muffler so bad that it dirties up the whole damn neighborhood. I've changed the oil, the spark plug, cleaned the under carriage, cleaned the carburetor, takin the hood off and cleaned the cooling system and still it does the same thing. I would just let it go but it shuts off after about 4 minutes and it's really hot. It also seems to worsen when I run over a thick patch of grass which makes me think airflow? But I cleaned the air filter too. Any ideas? Thanks!
2006-11-05 03:49:31 · 12 answers · asked by brian h 1 in Cars & Transportation ➔ Maintenance & Repairs
It sounds like either the choke is stuck partially closed (which is VERY bad for a running engine) or the engine is just worn out.
You didn't mention what type of motor so I assume it is air-cooled. Does it have a radiator or did you clean off the fins? I am picking choke because you say it starts fine and the problem isn't until it warms up, this is when the choke should be fully open allowing maximum air into the engine. This problem would definitely cause overheating.
Water cooled engines will smoke at startup if there is a problem with the cooling system leaking into the cylinder.
2006-11-05 03:53:43 · answer #1 · answered by ©2009 7 · 0⤊ 1⤋
There is such a thing as a cooling system on a air cooled engine (the fins/flywheel)
Cleaned the carb is good, and oil change is good (this rules out gas in the oil, or water in the carb)
white is oil none the less in a air cooled engine......, make sure the breather is not spitting oil up into the carb (breather might be worn out, or if ohv engine, head gasket blown over pressurizing the crankcase)
Also make sure its not too much oil.. (and it still doesn't smell of gas...)
Oil can be white to blue smoke, black too much fuel.
2006-11-05 15:51:57 · answer #2 · answered by 572ci. 5 · 0⤊ 0⤋
White smoke indicates water buring in the cylinder. I see you said you cleaned the cooling system that tells me it's a rider with a radiator? If so then you've got a cracked head or blown head gasket letting water in the cylinder.
For future reference
White smoke, water, cracked head or blown head gasket
Blue smoke, Oil, bad rings or valve guides or worn cylinders
Black smoke, running rich, either to much gas or bad plugs.
2006-11-05 03:54:17 · answer #3 · answered by noobienoob2000 4 · 0⤊ 1⤋
You have a major engine problem and it needs to be rebuilt or you need a new engine. Since it is a lawnmower I would suggest buying a new lawnmower before you pour anymore money into this one.
2006-11-05 04:31:27 · answer #4 · answered by mister_e79 3 · 1⤊ 0⤋
I'm with Joe six pack its either a cracked head or head gasket. Somehow water is getting into the combustion chamber and that's not good. Get it fixed and hopefully you have not done to much damage to the rest of the engine.
2006-11-05 04:08:02 · answer #5 · answered by Danno 2 · 0⤊ 1⤋
The motor overheated, and has been damaged. Burning oil so bad that its locking up the engine when it overheats.
2006-11-05 03:52:19 · answer #6 · answered by Silverstang 7 · 0⤊ 0⤋
It is oil, not water. Water smoke would dissipate rapidly in the air.
You have major problems with you engine, sorry to say.
2006-11-05 04:46:18 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Oil is getting into the cylinder. Could be broken rings or damaged piston.
2006-11-05 03:55:46 · answer #8 · answered by brookings88 2 · 0⤊ 1⤋
Take it to home depot and trade it in on an electric one. No pollution and environmentally friendly.
2006-11-05 04:10:46 · answer #9 · answered by ? 7 · 1⤊ 2⤋
Your rings are worn out.
2006-11-05 04:29:50 · answer #10 · answered by Nomadd 7 · 0⤊ 0⤋