S3010 problem

[burntclutch]

I have a 3010 with the s4l series engine
After a couple hours of run'n (bush hog'n)
If the tractor lugs a little it takes a while to recover and get back to pto max rpm
If I idle down any at all the engine will die
After setting for 5-10 min it's good to go again.
I have searched the forum to no avail
I have good filters
I have blow'n air back through my fuel line from tank to filter
I have cleaned my tank
What next?
Any one with an idea of where to look next?

 

[whis]

air filter?

 

[burntclutch]

air filter?

All my filters only have about 6hrs on them from last service.
And I allways blow out my air filter as part of my pre"trip" routine before it gets worked hard for several hours.

 

[burntclutch]

I think I found the problem
And embarrassed to say what I think the problem was,,,
It's warm'n up now to cut 7 acres,so I'll know in a couple of hours if I fixed the problem, probably would Have saved myself alot of headache if I would Have remembered to do this the last time I serviced it! Guess I was rushing for some reason?