White Smoke Jinma 254

[Jinma284]

When I first start my tractor I get white smoke. What causes that? The smoke starts while cranking and stops almost as soon as the tractor starts.

 

[/pine]

usually water in the fuel...

 

[Bob Rooks]

White smoke is unburned fuel. You may have a slightly dribbling injector.

 

[Sawyer Rob]

White smoke can also mean a lean condition, check to make sure your fuel filter isn't getting plugged.

SR

 

[SPIKER]

it is kind of normal when cranking to get white smoke, it is the cylinders just starting to fire but not quite enough heat, compression or some low fuel pressure till it all comes up and hits...

M

 

[Bob Rooks]

White smoke can also mean a lean condition, check to make sure your fuel filter isn't getting plugged.

SR

How does that work? Please explain

 

[D0TC0M]

If I don't plug in my tractor on a cold morning I get whitish/greyish smoke for a couple minutes but if I plug it in I get no smoke. This would lead me to believe that what STRIKER posted is the possible cause. I wouldn't worry about it.

 

[Sawyer Rob]

How does that work? Please explain

White smoke can mean a "leaned out" condition... A plugged or nearly plugged fuel filter will cause a leaned out condition... (not enough fuel getting through the filter)

It's another thing to check, NOT the only thing that can cause white smoke...

SR

 

[D0TC0M]

White smoke can mean a "leaned out" condition... A plugged or nearly plugged fuel filter will cause a leaned out condition... (not enough fuel getting through the filter)

It's another thing to check, NOT the only thing that can cause white smoke...

SR

I think what he meant was (and I am also curious as well) why a lean out condition results in a white smoke?

Also it is possible that a coolant leak via the head gasket could be causing this?

 

[Daver1963]

You may have a slightly dribbling injector.

There's a joke to be made there, but I won't make it.
Okay, yes I will.
They make pills to cure a "dribbling injector."

 

[Bob Rooks]

White smoke can mean a "leaned out" condition... A plugged or nearly plugged fuel filter will cause a leaned out condition... (not enough fuel getting through the filter)

It's another thing to check, NOT the only thing that can cause white smoke...

SR

Since white smoke is unburned fuel, which is usually caused by a cold combustion chamber / low initial compression until oil gets circulated to the cylinder walls via the oil rings to maintain a piston ring seal, I don't understand how your theory is valid since starvation of fuel would make the engine difficult, or impossible, to start. Unburned fuel also washes oil from the cylinder walls causing premature wear. It has long been proven that the highest degree of engine wear occurs during startup. Larger engines have pre-lube systems to counter this. There are also aftermarket pre-lube systems available for just about any engine.

 

[Bob Rooks]

There's a joke to be made there, but I won't make it.
Okay, yes I will.
They make pills to cure a "dribbling injector."

Bahahahahaha!

 

[Bob Rooks]

I think what he meant was (and I am also curious as well) why a lean out condition results in a white smoke?

Also it is possible that a coolant leak via the head gasket could be causing this?

That would be a white/grey smoke. Much darker in opacity. Also if that condition exists there would be a pronounced knocking (hydraulic locking) for the first few revolutions.

 

[Jinma284]

Bob Rooks how would I check for a slightly dribbling injector.

 

[Bob Rooks]

Bob Rooks how would I check for a slightly dribbling injector.

This is an observation that is noted as part of the pop testing procedure.