MFI Pump / partial load factory setting

[derek murray]

I need to set my pump’s partial load / main rack adjustment back to a factory (or reasonable starting point) setting. I can’t seem to find any info in the factory manuals, CMA, or online, so any help would be appreciated.

[faapgar]

Take your bottom adjustment and turn it all the way in.Then back it out 24 clicks and start.You need an AFR gauge to set the main rack.Ciao Fred

[derek murray]

Originally Posted by faapgar

Take your bottom adjustment and turn it all the way in.Then back it out 24 clicks and start.You need an AFR gauge to set the main rack.Ciao Fred

Thanks Fred, I’ll do that for my idle adjustment setting.

I’m able to test AFR, but was hoping for a starting point for my partial load as well. A PO had it set so far out that the adjustment screw fell into the sump with my first turn! I suspect it was messed with to address a whole host of other issues (bad injectors, sloppy throttle bodies, poorly adjusted linkage, etc) that have been addressed this winter.