Not getting enough fuel to a 3l

[dsaw]

My 2004 Hilux with a 3l engine has a top speed of 52 mph and a max rpm of 2250, occasionally 2300. I've never seen any hint of black smoke. I'm fairly certain I'm not getting enough fuel. When I got it, the truck had a filthy fuel tank with 1" of sludge in it. It came with an alternate tank, so I've swapped those out. In case it was an obstruction in the lines, I ran a temp bypass with a new line from the pickup to the filter (filter has been changed 3-4 times in 6 months). That didn't help, so to eliminate the pickup, I put a small container of diesel in the engine compartment and ran a line straight to the filter. That also didn't help. The line from the filter to the injection pump has been swapped to a clear line to watch for air, so it's fine. So it's not a line blockage issue. I adjusted the max speed linkage, but that didn't help. I screwed the fuel adjustment screw in and that increased my fuel per stroke since the idle is probably around 1200 now; but it had no effect on increasing the max rpm. I bled each injector after messing with the fuel adjustment just to be safe. It's had cleaner additives since day 1. I'm stumped. Any ideas?

David Sawyer
'04 Hilux

 

[hiluxjeremy]

Long shot here,

Have you tried to rev it with engine running from under the hood while verifying linkage is moving freely?

Once "fixed" a lazy 70 series by adjusting the in cab throttle stop under the pedal.

Wondering if you've got some sort of physical interference?

Maybe a wonky cable adjustment or something out of place?

 

[dsaw]

I did something similar: I jammed a rod from the seat to the pedal to fully depress it, and I have the limit set screw so loose it has a gap with the pedal at it's maximum downward position.