Pump hanging up again.

[Blackbumper]

Having problems with my pump again and hoping it's in the gov not the rack. I sent the pump off to St Joe Diesel last week but won't have a prognosis until for another week so I figured I would get some opinions on here. Plate is backed all the way off and It still seems to be fueling way to much never gets wound up like last year. Last year with a H2 cam off the shelf s475 I would turn 4200 to 4500 down the track this year I have yet to see above 3800 to 3900. At the last pull after I pulled away from the sled the RPMS stuck at 1800 tried to tap the throttle and nothing shut the truck off and restarted it and everything was fine. 2nd pass exact same thing happened but stuck at about 1600 turned the truck off and everything was fine. The gov seemed to be very jump that night and hard to control when bringing the rpms up. On the line at about 3000 it jumped straight to 4000 where normally it comes up smooth and going down the track I had a couple of seconds where the truck jumped about 300 rpm and the pedal felt like it lost some tension. This is a 13mm with some mods to the gov. Like I said the pump is at the shop and I'm just brainstorming trying to figure out the issues.

 

[Rods]

Mine did this with 6 clicks, I would back it off one and see what happens

 

[Blackbumper]

Mine did this with 6 clicks, I would back it off one and see what happens

Did yours seem to have to much fuel going down the track? The weird part is the pump was never opened up between this year and last.

 

[Rods]

I did some changes on my springs and some things happend with my fueling thats really weird ,I'll find out more this weeks if my older setup fixes my issue similar to yrs my rpms are slowly fallen down the trac unlike b4 ..IMO its still something with the GVS