L2800 KNOCKING/SMOKING

[DATA]

Was mowing then Kubota L2800 began knocking & smoking from exhaust. Turned off & towed back to house. It will turn over. What now? Always before the holidays! Blah!

 

[John T]

Kubota L2800 began knocking & smoking from exhaust.

What color Smoke?

 

[DATA]

It was black or gray smoke.

 

[chris142]

Injector stuck open?

 

[DATA]

I don't know. How can I tell it's injector?

 

[North Idaho Wolfman]

Stick your nose in the fuel tank, does it smell like gasoline?

 

[DATA]

fuel tank will always smell diesel. Maybe headgasket or.....?

 

[North Idaho Wolfman]

fuel tank will always smell diesel. Maybe headgasket or.....?

It won't smell like diesel if even a small amount of gasoline was added.
If you won't go check it then how do you know for sure?
You description is screaming contaminated fuel.

Have you checked changed the fuel filter?
Have you checked for water?

No it's not a head gasket issue.

 

[North Idaho Wolfman]

fuel tank will always smell diesel. Maybe headgasket or.....?

Let me clarify:

A Diesel tank will not smell like Diesel if any gasoline was introduced into it.
It will smell like gasoline.

Water in the fuel can also cause it to cough / knock and smoke.