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Old Mar 23, 2007, 01:19 PM
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FrankW's Avatar
Portland Intl, Oregon, United States
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Gas engine blowing white smoke... help please.

Okay, to be honest, this isn't a plane question, and I'm sorry. If this needs to be posted in another section, please move it. However, I thought this would be the best place to ask for small gasoline engine advice.

I just brought out the lawn mower after sitting in the garage all winter (long, wet winters in Oregon) and after starting it up, it blows a lot of white smoke. I shut it off immedietly and thought I'd ask if anyone knows what's up. Is there oil or water in my gas? Should I drain it and refill it with fresh gas? It uses a seperate oil tank and I believe it's a 4-stroke, but I could be wrong.

I'm an electric flyer and I probebly should've bought an electric lawn mower, but the cordless ones were out of my price range, and I didn't want a corded one because I feared running over the cord (Zap!).

Any help would be apresiated.

-Frank
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Old Mar 23, 2007, 04:58 PM
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USA, ND, Grand Forks
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Turn it on, and let it run for a bit and see if things clear up.
Put new fuel in there also, and oil.
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Old Mar 24, 2007, 08:49 PM
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A little wine, a romantic dinner,,, what better way to "turn on" your lawn mower!
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Old Mar 24, 2007, 09:27 PM
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Columbus, Ohio
Joined Jun 2005
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if it has an oil fill it's a 4 stroke, it is prob just old gas, drain it and replace the gas.

If it has a seperate oil fill that isn't part of the engine casing it will be a 2 stroke.

A picture would help of the engine
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Old Mar 27, 2007, 01:53 AM
NM2K
Ringgold, GA, USA
Joined Jan 2006
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Quote:
Originally Posted by FrankW
Okay, to be honest, this isn't a plane question, and I'm sorry. If this needs to be posted in another section, please move it. However, I thought this would be the best place to ask for small gasoline engine advice.

I just brought out the lawn mower after sitting in the garage all winter (long, wet winters in Oregon) and after starting it up, it blows a lot of white smoke. I shut it off immedietly and thought I'd ask if anyone knows what's up. Is there oil or water in my gas? Should I drain it and refill it with fresh gas? It uses a seperate oil tank and I believe it's a 4-stroke, but I could be wrong.

I'm an electric flyer and I probebly should've bought an electric lawn mower, but the cordless ones were out of my price range, and I didn't want a corded one because I feared running over the cord (Zap!).

Any help would be apresiated.

-Frank

-----------


White smoke is usually an indication of having water in the fuel. Drain the fuel tank and refill with fresh gas.

On the other hand, I doubt that running water through the engine will damage it at all and it might clear up after a while. So, if the engine is running well enough to mow the lawn, just go ahead and mow.


Ed Cregger
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Old Mar 27, 2007, 08:41 AM
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Ok, it will not run with water in the fuel, it obviously seems to be a four stroke engine. I am betting it is an overhead valve engine, also betting that a little oil has seeped by the valve guides and/or seals. Just start the thing and let it run. It will 'burn off' the residual oil and every one will be happy (except for the local mosquito population!)
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Old Mar 27, 2007, 12:26 PM
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Fishers, Indiana
Joined Oct 2004
5,889 Posts
Some mower engines that set will have there rings get stuck in the piston and not seat with the cyclinder. I had this happen 3 years ago. Once the engine got good and hot I shut it off, then when I started it up, no more smoke. Then last year I had it happen again and I broke the engine down and the ring was stuck so tight that I broke it getting it off the piston. Not sure what caused this (maybe not changing the oil enough).

Just my 2 cents

DAG
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Old Apr 05, 2007, 08:05 PM
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Well Frank, whats' the vedict??
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Old Apr 05, 2007, 09:18 PM
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Portland Intl, Oregon, United States
Joined Dec 2002
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Oh yeah, sorry. It was the gas. I drained it and refilled it, no more smoke. Thanks for the advice guys.

-Frank
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