At the tech session, at least one car's air intake flap in the throttle housing would not open all the way, even with the gas pedal pegged to the floor. One possible cause is that the gas pedal travel needs adjustment, which was the diagnosis at the time.
However, upon returning home, I checked mine. Sure enough, the flap does not open all the way. The cause however is not that the pedal needs adjustment, but that the FI pump lever hits its 'full throttle stop point' before the throttle flap does!
The FI lever and the throttle flap each start simultaneouly from rest. Apparently though, the FI lever reaches 'Max' appreciably before the throttle flap does.
I looked at and fiddled with the set-up for a while, lengthening and shortening the various connecting rods, but to no avail. I am probably missing a very simple correction, and would like to know what it is ... anyone have a clue? If the throttle flap is indeed opening too slow in relation to the FI pump, then that probably causes a too rich fuel mixture at anything above idle (unless the FI pump's partial and full load screws are adjusted appropriately, which I doubt). Could that explain relatively high gas mileage?
An easy fix would be to move the baljoint at the end of the lever that connects to the throttle flap a bit more inwards, so that the same movement of the gas pedal results in more response from the air flap. But there has to be another way I am guessing.
Cees ("Case") Klumper in Amsterdam
'69 white 280 SL automatic