1986 240DL starts but won't idle longer than about a second

[nsistek]

The car starts quickly then quits after 1 or 2 seconds. Cranking the starter again right away repeats the symptoms. Stepping on the accelerator while the starter cranks gives higher revs but only for a second or two, then quits.
It seems like there is enough fuel for a start, then the fuel runs out, then replenishes for the next start. Plenty of gas in the tank. I replaced the fuel filter with no effect. 25 AMP fuse is continuous and clean. Flame trap is clean. Fuel pressure test next? Any ideas? Thanks for the help.

[hillbilly]

Does the engine die immediately when you let off the start switch?
Sorta like the ignition has been cut off?
Or more like it's running out of fuel....Huh...Huh....Huhhhhhh.

steve

[nsistek]

More like it runs out of fuel. I still need to check if power is reaching the main pump. I don't hear it humming...