1971 250C CAN'T FIND FORTH GEAR!

[knucklebuster]

Is there an adjustment that I can make so that this car utilizes all
gears?

60 mph at 3500rpm suggests it's only using 3 of the 4 gears in the
automatic transmission.

Any suggestions about sync/tuning the dual Zenith carbs? She runs
rich.

Regards,

K

[Tiger]

Mmm... isn't it possible your car only has three gears? I don't know much of
your car. Otherwise check your gear shift linkage to make sure it is tight
and not missing any bushings.

Then I'd service your transmission... new filter and fluids.

[Roland Franzius]

Post by knucklebuster
Is there an adjustment that I can make so that this car utilizes all
gears?
60 mph at 3500rpm suggests it's only using 3 of the 4 gears in the
automatic transmission.
Any suggestions about sync/tuning the dual Zenith carbs? She runs
rich.

Clean all fuel jets and adjust equal bypass air on both carburetors by
hold closing the opinings with the two caps made of your palms. One has
a good discriminant feeling for equal vacuum pressure sucking.

13-20l/100km (10-16 mpg) are normal, cold start short trip and town
traffic in winter more (less).

Fourth gear missing:
The regulator pressure is too low or the control arm is hanging.
Switching into 4 should occur between 40 km/h (30 mph) at low gas and
125 km/h (80 mph) at full throttle without kickdown.

Kickdown switch and cable should be checked too.