Cat 262b bogging under throttle

This 'demon" has been around a while now. Machine runs great....half day. All of a sudden, starts sputtering and puking smoke. Not even half power. SOMETIMES...you can turn off, turn back on. Most the time, that only last minutes.

Next day, runs like bat out of hell for...half day?

Changed fuel filter MULTIPLE TIMES!

Someone suggested my fuel lines may have collapsed...on inside. Changed them. Thought I fixed...NOPE!

Sent to mechanic while back to check to see if something was in...

Cat 262b bogging under throttle

Cat 262b bogging under throttle