Makes me wanna cry -- D-Jet torment, 1973 1.7 D-Jet malfunctions... Options

[Superhawk996]

Should have given you the factory manual procedure. Same procedure is in Haynes manual.



Note: there is a thrust washer below the dizzy drive gear - use caution when removing & installing. Don’t lose that washer into the case. If the washer stays in the case / dizzy drive bore (it usually does) - use a magnet to retrieve it. A dab of grease on the bottom of the dizzy drive will hold the washer in position during install.

[mgphoto]

I'm almost certain the dizzy is installed correctly.

I had the engine out of the car when I installed it and was able to verify I was #1 TDC by looking at the armature in the old dizzy, pointed at #1 and by checking the valves were both closed on #1,

I’m not convinced.

There is more to it than just matching where #1 was on the old distributor combined with the fact that it wasn’t running properly even back then.

The position of the distributor drive gear is actually what establishes the timing relationship between the crankshaft and the distributor.

Good job with all the follow up pictures and the video. (IMG:style_emoticons/default/smilie_pokal.gif)

I suspect your timing isn’t correct and that you’ll need to pull the dizzy and check the orientation of the distributor drive gear. I believe your dizzy drive gear is off by one tooth (30 degrees). I think the position of your distributor cap relative to the engine fan shroud also bears this out. Late (retarded) ignition timing kills manifold vacuum and that also seems to be consistent with your inability to get a steady idle.

I understand if you are reluctant to do this but if the timing & orientation of the dizzy drive isn’t correct, it will affect everything else (vacuum, RPM’s, engine power, etc).

Here are two pictures of the correct orientation. The two c-shapes are not symmetric and the smaller one should be oriented at the bottom as shown in roughly the 5 o’clock position.

I agree with superhawk, I have the 123, when it came back after repair the craw at bottom was 180* off.

[pbanders]

Center connector on the dizzy harness is a ground, not needed on the 123.

(IMG:style_emoticons/default/agree.gif)

Look at:

https://pbanders.synology.me/914/ecu1.jpg

Terminal 12 is connected internally in the ECU to ground. There is some question, however, as to why Bosch did this, as it sure seems the body of the distributor should be a reliable ground.

I'm not sure what reversing 21 and 22 would do, I'll think about it.