Green Tractor Talk banner

1 - 13 of 13 Posts

·
Registered
Joined
·
10 Posts
Discussion Starter #1
My 2006 la110 has a weird problem,every once in awhile while mowing all of a sudden big cloud of smoke. I shut it off then restart everything will be fine,then it might happen or not happen again.macine has always been well maintained,oil is not overfilled also this is not on start up.This unit has 19.5 b+s engine on the fuel pump i see a little oil,this fuel pump is the type with three ports one to carb one to crankcase one from tank.Also i've been reading here about gas cap vent ? maybe something to do with it. also other than this smoke the mower runs good,no odd noises or anything. THANKS
 

·
Registered
Joined
·
59 Posts
Hey Charlie, welcome aboard!

First off, by "cloud of smoke" do you mean just a sudden puff of it and then it stops smoking....or does it start smoking and continue smoking until you shut it down?

If simply a momentary puff, can you think of anything at all when you see the cloud of smoke? For example, a truck or automobile will often throw a puff of smoke when shifting gears with a manual transmission. While this has nothing to do directly with the tranny, the sudden load off the engine and sometimes increase in rpm (dependent on how quickly or not so quickly one let off throttle) may throw some smoke. I have seen lawn-tractors and walk behind mowers both throw a puff of smoke when a collection or clumping of clipped wet grass unlodges!

Don't know if that reads well but my point is, when a sudden load is removed from engine allowing rpm to increase, it seems as if some unburned fuel may suddenly ignite with increased rpms.

I'm just trying to brain storm here......:hide:
 

·
Registered
Joined
·
10 Posts
Discussion Starter #3
thanks

It's not a small puff of smoke when i see the smoke ishut it down ,then restart every thing ok .then i could run another hour maybe, and no problem.Like i said weird problem.also no weird noises .and when it runs it runs fine.
 

·
Registered
Joined
·
771 Posts
Sounds like a designed pollution control with the fuel pump sucking vapors from the gas tank and the crankcase and sending them to the carb to be burned up in the engine. ...if it has a crankcase filter/breather it could be dirty causing a vacuum in the crankcase which sends the crankcase vapors to the carburetor to get burned or sent passed the rings to be burned in the combustion chamber. .....

Thinking about it if the rings are worn or broke you could be pressurizing your crankcase forcing oil and or vapors to the combustion chamber and carb.... but you say it doesn't happen all the time so I doubt worn or broken rings are the problem.
 

Attachments

·
Registered
Joined
·
10 Posts
Discussion Starter #5
thanks

thanks again, this weekend I'am going to check out machine again . right now I'am dealing with snow , sullivan cty ny. but this problem is important to me. It's a weird problem you could run machine right now for two hours and it might not act up at all,when it runs it runs like brand new.when it does smoke believe me it's abig cloud of smoke but then goes away.Like i said no weird noises. - Thanks again any idea's help
 

·
Registered
Joined
·
10 Posts
Discussion Starter #6
problem solved

The problem was head gasket, the gasket was damaged on the square section where push rods are ,compressed air was being pushed into this area,thereby pressurizing crankcase.Installed gasket adj. valves ran about an hour all symptoms cleared up. Thanks to all.
 

·
Senior GTT Super Slacker
Joined
·
36,618 Posts
Charlie, Sullivan Cty NY? Where?
 

·
Senior GTT Super Slacker
Joined
·
36,618 Posts
Hasbrouck here. Near Woodbourne. Good old Rockland House!
 

·
Premium Member
Joined
·
6,593 Posts
Glad to hear you got 'er fixed.

Sometimes the problem just isn't obvious. Thank you for keeping us up to date on this.
 

·
Registered
Joined
·
2,160 Posts
yes....thanks! It is nice to have closure on a problem and it may help someone else down the road by letting us know what you found.
BTW ,I've noticed we havent had any posts by Tackit in awhile. I just checked his profile and it shows he hasn't even checked in here in 2 months...I hope he's Ok.
 
1 - 13 of 13 Posts
Top