Ok,

To start, I'm an ASE tech, but I specialize in domestic (US) & asian makes. I've never worked on a Benz before or anything with mechanical injection.

I got the car, no start. Fuel pump dead, so replaced pump & filter. No fuel from tank. Pulled tank & found in-tank filter 98% blocked & fuel level sender stuck. Replaced filter. Notched used screwdriver to dissassemble level sender, cleaned contacts, rod & re-soldered copper wire.

Re-assembled & re-installed tank with new main hose & return hose. Pump dead-heads due to high pressure. Removed supply line @ engine (leaving in-line filter attached to end of hose) and I have plenty of flow. Reconnect supply, run pump and no fuel out of return hose fitting.

I can get the engine to idle smoothly with a constant spray of starting fluid (and pump disconnected), so it's probably not timing or spark related, and spark line on scope looks strong.

Alldata, Mitchell & Autodata are no help. I've ordered a set of discs on ebay, but I was hoping for some insight from others since I have this weekend free and the CD's won't get here until next week. I would have ordered the factory manual on CD, but I didn't find this site until today.

I'm thinking a fuel varnishing problem, and that I should just start removing lines, injectors, etc... and letting them sit in acetone as well as removing jetronic module to clean up as well.

Like I said, though, I don't know anything about mechanical injection - I don't have so much as a decent diagram of anything, so I don't want to screw anything up because I'm impatient.

Any help or a direction to go while waiting on the CD's (I don't get many full weekends off) would be very much appreciated.