I HAVE 1990 300E/2.6L WITH A NO START. CAR HAS DUAL FUEL PUMPS.

ok. what happens when you turn the key? does the starter crank the engine at all? are you getting spark and fuel?

Engine Turns Over, I Have Spark. What Is The First Check On The Fuel System?

Turn ingition to On, listen to verify fuel pumps operate behind R/R wheel; if no response, remove fuel pump relay (behind battery & cover) and bridge #7 &#8 pin receptacles with jumper, with ignition switch to ON, if you hear fuel pump runs, it may be your relay (about $130.00). Anyone with other ideas?

I have the same problem with my '92 300TE 4Matic, but don't know how to check to see if I have a spark. Could you explain how I do that? Also, is it a procedure that requires two people?

Like with Todd's car, when I turn the key to start, the engine cranks fully, but it won't catch. The oil pressure increases, but the tach doesn't move. I have tried pumping the accelerator to see if I can smell gas and I cannot. I also cannot hear anything in the viciinty of the fuel pumps - no buzzing or hissing. I checked the OVP relay and the fuses are fine and the contacts clean.

As for the fuel pump relay, what does it look like? When I checked the OVP, there were two other relays beside it, both black and about the size of a small book. One, closer to the battery, was maked "4matic", and another closer to the firewall, was unmarked but for some numbers. Was that it? Finally, can you explain to this moron what you mean when you say to just "bridge #7 & #8 pin receptacles with jumper". Thanks for letting me piggy-back on Todd's post and for your patience with these basic questions.

link to pic

It's the relay that starts w/ "89". Note that this picture was taken off a 190e, but the relay location should be the same on the 300e.

I'd check the fuel pump relay 1st, then leaking or failed fuel pump.