I have for several months had an intermitant problem with my '82 300D suddenly losing power and either stalling or nearly doind so. It usually happens at highway speeds and/or going uphill. I can drive it for several hundred miles without a problem and then have it happen again for the next 20 or 30 miles. Usually if I can shift it into neutral and pump the accelerator it will seem to clear up and run ok for a bit. Downshifting to a lower gear when possible, increasing the rpm, often works too. After dying on the Mass Pike, at night, in a section with no shoulder or breakdown lane and very nearly getting creamed despite having my hazards on, I have pretty much just been driving on local roads for the last month. This weekend it stalled on me on a flat section while doing 30 mph.

It will happily rev in neutral with no problems. I do however see tiny air bubbles in the primary filter and the level of fuel in there goes down.

I have replaced everything from the outlet of the tank to the primer pump, including the fuel line.. Both filters are new. My primer pump was leaking and I swapped it for one off my parts car which is OK. I will replace that one with a new one soon. I have checked and tightened all the hose clamps, which are the high pressure type.

The only thing I can think of is that the fuel tank strainer may be getting clogged? Before I go to the trouble of draining the tank and removing it I wanted to hear some thoughts on that.

I just remembered that the problem has mostly happened shortly after filling the tank, but not always.

Sorry for the long post - trying to cover everything.

BTW does anyone know why spell check didn't work on the first paragraph but did on the others?