Quote:
Originally Posted by Maxbumpo
OK, all the throttle linkage stuff has specific lengths (or ranges the length must fall in) in order to get full sweep of the injection pump fuel rack (i.e. get full power from the car). The idle speed is (probably??) adjusted via a set screw on the back of the injection pump. I've never worked on an '85, so hopefully someone who has can chime in here. Starting with the next generation of engines (OM60x), the idle speed was set electronically. '85 123 cars are a "cross-over" and have some newer features on the IP and some older features, so I need to defer to someone with more knowledge.
In general, if you are adjusting throttle linkage stuff in order to set the idle speed, you're probably doing it wrong. My '87 wagon throttle linkage had been really buggered up by a previous "mechanic", I ended up removing all of it, setting all the rod lengths to the factory-specified length, and then put it all back together, and the change in performance was amazing.
|
Thank you so very much for the help!
I am suffering from severe gut pain and cramping, so a little distracted and hazy. So when did I say I used the linkage to adjust idle?
Let me be clear: if you adjust the linkage, must at least check idle, not just cold like I did, but good and hot. Adjusting the linkage can adjust fuel amount, which of course affects idle.
Setting idle on a '85 is the same as the others: screw with 14mm lock nut located on the side of the injection pump on the inboard side.
Tram found an issue, which significantly increased performance, to the point of hard to get used to, leading to a speeding ticket (coming down a hill plowing up for the next due to performance issues which had until I came home and left the fuel cap off.).