Thanks for the rely guys.

I would rather the car pass emissions as it is supposed it. It used to pass just fine, now it doesn't so something has changed. Enough that the opacity is like 5x what it was inside of a single year.

It is definitely black smoke. A block would likely work to get it to pass emissions as I can see the smoke with a mirror while driving and I can control it with the throttle.

I still have everything apart for the drip test, but I will try looking down the delivery valve when I put it back to see if I like it better.

I think my biggest question is really if fuel should be flowing out while the engine is not on the compression stroke. If it were actually injecting fuel at this time, it would be injecting in the exhaust stoke... However, given that the delivery valve and injector are not installed at the moment, I am not sure if that behavior is normal but wouldn't result in any actually injected fuel when everything is assembled.

Jim

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1985 190E 2.3-16v Euro
1980 300GD SWB