Bobcat 864 - laboring issue when warm (deutz 73HP)

[Kitt]

Hey guys, I am having an issue where the machine behaves like it's starving for fuel and bogs/labors.......... It seems to surface when the (1) machine/ambient is hot or (2) randomly on weird angles/slopes, which could just be the machine working harder/hotter...............I'm at the start of a busy season at my house and would really like some help getting back up to power!............................ 300 hours ago: I have replaced the short 2" fuel hoses from the rail to the cylinders with non-braided standard diesel fuel line at some point..................... 100 hours ago: I replaced the in tank fuel pick-up screen/filter and used standard clear fuel line about 2 seasons ago, checked & screen is clean. When I fished the original out, I also grabbed a piece of straight black hose (assumed it was on the fuel return elbow, and wasn't necessary to replace).................... 50 hours ago: Removed the fuel bulb at some point too because that was sucking in when it got hot (and pinching off fuel) last season. I replaced the inline filter last year. 1 hour ago: fresh fuel filter on the machine & check pick-up line screen..............I am also wondering if there could be a loose electrical connection or wire short that's causing a brake engagement or some other issue............Any suggestions!?!? Thanks in advance for the help!

 

[Tazza]

You mention that 50 hrs ago you replaced the hand primer as it was sucking flat, this is a sign of a restriction before the hand primer, filter, puckup tube, elbow, somewhere.
When it looses power, check the state of the hand primer, if it's flat again, you have a restriction causing the issues.