1992 400SE.

I took this W140 out of storage after 8 months and it started without any hesitation or problems. I let it idle for about 5 minutes and then it suddenly died.

I tried to start it back up, but got nothing. I tried again a few more times, leaving a few minutes in between, but still nothing.

I started by siphoning out all of the approx 1/8 of fuel that was left and filled it with fresh new gas, but still nothing. I proceeded by removing the Injectors which I'm going to get tested tomorrow.

Last year I did:
* Spark Plug Wires Set
* Both Distributors and Rotors
* Both Ignition Coils

Two years ago I did:
* Spark Plugs
* 8 New Fuel Injector Seals and O-Rings

Anyone have any ideas on what caused it to suddenly die and other areas that should be examined?

Somehow I have a feeling the injectors are not the problem.

Appreciate all the help in advance.