240D pneumatic IP adjustment - PeachParts Mercedes-Benz Forum

resago2000 · #1 09-01-2023, 10:18 AM

does anyone have instructions or a diagram on how to adjust my IP?
the car NEVER smokes, not even on hard acceleration.
I think there is a little room for more fuel in my case.

gmog220d · #2 09-01-2023, 10:49 AM

Tuning of the Diesel Engine - OM615 OM616 (Pneumatic Governor)

resago2000 · #3 09-01-2023, 01:23 PM

so counter clockwise on full load stop screw (23) = more fuel?

gmog220d · #4 09-01-2023, 04:51 PM

Quote:

Originally Posted by resago2000

so counter clockwise on full load stop screw (23) = more fuel?

There are two Full-Load Stop Screws. One on the Control Valve, a.k.a. throttle body (Fig. 00-43/3, #1), and the other on the body of the IP under the governor housing (Fig. 00-43/4, #23). Turning either of these out (CCW) will result in more fuel.

I'm seeing Section D as the starting point. If the car does not reach the set speed points for 2nd and 3rd gears, then start with making the adjustment to the full-load stop screw on the Control Valve (#1). Then go to Section F if needed.

resago2000 · #5 09-06-2023, 12:47 PM

the thing I'm trying to get is more off idle acceleration. there's a good second or two from when I mash the pedal to when the car decides to move.

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