Blue smoke on cold start/cold outside

[TJP89]

I would do that. Sounds like your dealer is kind of a meat head. The sample will give you peace of mind and some leverage with the regional rep if the dealer drags their feet.

I would do that too. You already should have the tractor in under warranty, but if diesel is present, the dealer will have no excuse. Even if it doesn't, I'd still get on him. As someone said, you paid for a functioning tractor, and this is not it. That's why there is a warranty.

 

[RayK]

I have a CK20 2005, it has almost 2000, hrs on it and has smoked blue and black on start in the cold since new, after a few seconds of warm up its fine, it also will sputter when first started I just add fuel it smooths out and runs fine. Try heating it a little longer on cold days to reduce the smoke on start.

 

[K man]

SMOKE COLOR

Basically there are 3 types of smoke emitted from a diesel engine: black, blue and white.

Black smoke:

Black smoke is the most common emitted from diesel engines and indicates incomplete combustion of the fuel. Black smoke causes can vary widely and include ..
· Incorrect fuel injection timing
· Dirty or worn fuel injectors
· Over fuelling
· Faulty turbocharger, or turbo lag
· Faulty or dirty exhaust gas recycling (EGR) system
· Incorrect valve clearance
· Incorrect fuel to air ratio
· Dirty or restricted air cleaner systems
· Over loading the engine
· Poor fuel quality
· Cool operating temperatures
· High altitude operation
· Excessive carbon build-up in combustion and exhaust spaces

Black smoke can occur across the entire operating range, but is usually worst under full power, or during the lag before the turbocharger boosts air supply to match the fuel usage such as in the early stages of acceleration and during gear changes. Moderate turbo lag smoke is acceptable; otherwise black smoke should be hardly visible in a correctly running engine.

Blue smoke:

Blue smoke is caused by engine lubricating oil burning. The oil can enter the combustion chamber from several sources including:

· Worn valve guides, or seals
· Cylinder &/or piston ring wear
· Cylinder glaze
· Piston ring sticking
· Incorrect grade of oil .. too thin and getting past rings, or valves guides
· Fuel dilution of the oil, making it too thin.

Blue smoke is often evident at cold start, which can reflect reduced oil control due to carbon fouling deposits around the piston rings and/or cylinder glaze. Blue smoke should not be evident at any stage.
An engine may burn oil without the evidence of blue smoke, because good compression burns oil quite cleanly, however, it is not acceptable for any new engine, or engine in good internal condition to burn large amounts of lubricating oil.

White smoke:

White smoke is caused by raw, un-burnt fuel passing into the exhaust stream. Common causes include:
· Incorrect fuel injection timing
· Defective fuel injectors
· Low cylinder compression

Low cylinder compression may be caused by leaking valves, sticking piston rings, ring wear, cylinder wear, or cylinder glaze. When white smoke occurs at cold start and then disappears as the engine warms up, the most common causes are fouling deposits around piston rings and/or cylinder glazing.
Continuous evidence of white smoke indicates a mechanical defect, or incorrect fuel timing.

 

[TJP89]

SMOKE COLOR

Basically there are 3 types of smoke emitted from a diesel engine: black, blue and white.

Black smoke:

Black smoke is the most common emitted from diesel engines and indicates incomplete combustion of the fuel. Black smoke causes can vary widely and include ..
· Incorrect fuel injection timing
· Dirty or worn fuel injectors
· Over fuelling
· Faulty turbocharger, or turbo lag
· Faulty or dirty exhaust gas recycling (EGR) system
· Incorrect valve clearance
· Incorrect fuel to air ratio
· Dirty or restricted air cleaner systems
· Over loading the engine
· Poor fuel quality
· Cool operating temperatures
· High altitude operation
· Excessive carbon build-up in combustion and exhaust spaces

Black smoke can occur across the entire operating range, but is usually worst under full power, or during the lag before the turbocharger boosts air supply to match the fuel usage such as in the early stages of acceleration and during gear changes. Moderate turbo lag smoke is acceptable; otherwise black smoke should be hardly visible in a correctly running engine.

Blue smoke:

Blue smoke is caused by engine lubricating oil burning. The oil can enter the combustion chamber from several sources including:

· Worn valve guides, or seals
· Cylinder &/or piston ring wear
· Cylinder glaze
· Piston ring sticking
· Incorrect grade of oil .. too thin and getting past rings, or valves guides
· Fuel dilution of the oil, making it too thin.

Blue smoke is often evident at cold start, which can reflect reduced oil control due to carbon fouling deposits around the piston rings and/or cylinder glaze. Blue smoke should not be evident at any stage.
An engine may burn oil without the evidence of blue smoke, because good compression burns oil quite cleanly, however, it is not acceptable for any new engine, or engine in good internal condition to burn large amounts of lubricating oil.

White smoke:

White smoke is caused by raw, un-burnt fuel passing into the exhaust stream. Common causes include:
· Incorrect fuel injection timing
· Defective fuel injectors
· Low cylinder compression

Low cylinder compression may be caused by leaking valves, sticking piston rings, ring wear, cylinder wear, or cylinder glaze. When white smoke occurs at cold start and then disappears as the engine warms up, the most common causes are fouling deposits around piston rings and/or cylinder glazing.
Continuous evidence of white smoke indicates a mechanical defect, or incorrect fuel timing.

We really need a thread where we keep great explanations like this. Then when the question is asked again, it's just a matter of cut and past. I know the hydraulics guys would appreciate it too.

 

[K man]

It is up to one of the mods to put that info into a sticky so everyone can see it when needing answers about engine smoking.

 

[Fuggley]

hummm... wondering what color smoke you should expect to see during the first few puffs out of a normal startup of a non tier 4 small diesel? Would that be the white variety?

 

[TJP89]

hummm... wondering what color smoke you should expect to see during the first few puffs out of a normal startup of a non tier 4 small diesel? Would that be the white variety?

I cold weather I often get white smoke, amount varies. In really cold, I've had very rough start, and the barn full of smoke. Smooths out and clears up after a minute or with increased power. It has always started though:thumbsup: That's why I paid 20K for it.

 

[davesl708]

hummm... wondering what color smoke you should expect to see during the first few puffs out of a normal startup of a non tier 4 small diesel? Would that be the white variety?

My BX has a very brief puff of black smoke when it starts. Less than a second. A little longer when very cold.

It is a 2003 model. No tier anything.

 

[liberty2701]

I have not had the opportunity to really use my tractor since i posted this. Since we have been having very warm weather, I decided to start my tractor to see if the smoke has changed. The temp was 50 f. It started right up as usual. The smoke only lasted or 4 to 5 secs on a count. Nobody yell since I have not brought it back to the dealer yet. It had no puff and practically a normal start. Does this indicate anything? I also added power service diesel clean /cetane boost the last time i used it. Not sure if it was the additive or the warm weather?

 

[davesl708]

I have not had the opportunity to really use my tractor since i posted this. Since we have been having very warm weather, I decided to start my tractor to see if the smoke has changed. The temp was 50 f. It started right up as usual. The smoke only lasted or 4 to 5 secs on a count. Nobody yell since I have not brought it back to the dealer yet. It had no puff and practically a normal start. Does this indicate anything? I also added power service diesel clean /cetane boost the last time i used it. Not sure if it was the additive or the warm weather?

The Power Service may be cleaning up the injectors. I run PS in all my fuel year round. Maybe let it run and work for a few hours and see if it cleans up.
If not I would see the dealer.