It's a mechanical head.
This car ran good before the pump swap.
I heard these pumps have more power and give better fuel mileage. Hoping for an upgrade.
The TD pump with this idle bump, on my '84 with the 1.7TD, works great. I never touched it.
If you are having adjustment issues with the idle being controlled by the main fuel screw you may need to index the arm on the splined shaft.
I have been changing the position of the arm on the splines.
I tried putting it back on the same as it was but the governor spring was pulling too hard, RPMs climbed. I had to back the max fuel screw out too far.
I could look through the OUT hole and see the idle spring was already pulled tight and moving the lever moved nothing.
As it's set now I can see the idle spring compress when the arm is moved.
The line on the splined shaft isn't pointing at one of the 3 lines on the arm. I haven't seen that before, other than in a pic 8v showed of his pump. Same kind of pump.
Yeah, I'm going to have to get the tools out and see what the timing curve looks like before I can figure this out.
White smoke can also be caused by air in the fuel but I haven't been seeing any of that.
It is hard to prime after opening it up. I have to suck fuel through the pump and pull all of the air out. It won't seem to pull fuel on it's own until all air is removed.
so maybe the fuel pressure regulator is set too low and air is getting pushed back to the front of the pump once inside.
It runs smoothly once it does start.
One thing I didn't check was if the accelerator arm is making it all the way to it's stop when floored.
The whiteish smoke isn't just at high RPMs, midrange too.
Seems like I read it's a sign of an improperly set residual fuel screw.
