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Cub cadet LTX1046VT white smoke and gas coming from exhaust when first started.

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Sounds like your Cub Cadet needs a complete tune-up (new air filter, sparkplug, choke adjust, etc).
Check your compression for piston ring seal. Do this by screwing a compression tester into the sparkplug hole and turn it over a few times.
You should get at least 90 PSI or more.
125 to 130 PSI is better (check manual for specs).
A low compression reading means your cylinder(s) and rings are worn allowing oil and crankcase gases into the combustion chamber. My guess this is your problem.
I suggest save your pennies towards a new mower.
Alfred Schrader

Posted on Oct 13, 2017

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Relax! This is a common thing with modern lawn-tractor engines and no cause for concern if the smoke clears up within a couple of seconds after the engine starts. When you shut off the engine, a bit of gas is trapped in the cylinders and condenses as the engine cools. Then, when you start it cold using the choke, the engine is temporarily "rich" and a puff of smoke comes out. The smell of gasoline is caused by the same issue; some of the raw gas is expelled during the first few exhaust cycles and you get a whiff.

Posted on Oct 06, 2017

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Most lawnmowers don't have a radiator and run by magneto. If your getting white smoke and fuel coming out the exhaust it sounds like it's burning too rich. Your spark plug is probably wet and fouled. The carb is too rich letting too much fuel in the cylinder. Note being on a slightly rich side is better than too lean. But not to the point your dealing with. Start with the carb and make sure it's clean and mixture is set right

Posted on Sep 20, 2017

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White smoke, depending how much and how long it lasts, could be from simple overnight condensation in the exhaust system = should disappear once warmed up. Or, if the smoke doesn't go away, you could have a blown head gasket which is allowing anti-freeze and water into your cylinders.
Check your radiator / reservoir to see if the level has dropped, or if you are having to add water to it. If so that means (for some reason - Cracked Block ?) the water is getting in.

Posted on Sep 20, 2017

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Carb. Needs needle valve or float repair to keep fuel from flooding. If it does not have shut off valve in fuel line from tank to carb. Install one and ALWAYS close when storing between mowing. .

Posted on Sep 10, 2017

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Posted on Jan 02, 2017

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SOURCE: I cant start my cub cadet cc989

sounds like a plugged high speed jet

Posted on Oct 24, 2008

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SOURCE: white smoke coming from exhaust when accelerating

This is usually an indication of a bad head gasket.I gasket. The white smoke is the coolant leaking out of the engine and winding up in the oil passages, due to a bad head gasket. To confirm this,
1. check oil. Is level increased, or milky appearance?
2. Is coolant level dropping, but u don't see any signs of leaks?
The above indicates a bad head gasket, causing the white smoke u describe. Let me know how u make out.

Posted on Jan 03, 2009

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SOURCE: White smoke coming out of the exhaust when starting?

Hello;
Volumes of white smoke is an indication of water in the exhaust. A certain amount of vapor will be present on start up, but if it is different than what has been the norm for this vehicle then a check of the cooling system is in order.
Rich
RPM Northwest

Posted on Mar 25, 2009

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SOURCE: cub cadet 7254 with a 25 hp kawasaki running rough when hot

your carb needs to be either rebuilt or replaced. it is crudded up with lacquer.

Posted on May 10, 2009

ILikeBMW
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SOURCE: Blueish white smoke comeing from exhaust

Hello There

White smoke when first started is normal. If white smoke continues you have an internal coolant leak, i.e., cracked head/blown head gasket.
Black smoke is caused by a rich fuel condition.
Blue smoke is caused by oil consumption.

You need to check your oil cap for yellow/white gunk on the cap if you have this then this is a sign your head gasket is cracked. Check to see if your radiator coolant level is down this is also another sign.

Hope this helps. Please don't forget to rate me.

Many Thanks

Posted on May 20, 2009

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