1986 560SL starts, runs, then dies after 10 seconds

[yelcab]

I have a 1986 560SL that has sat a bit. I changed the battery and it starts up strong, runs for about 10 seconds, and stumbles and dies.

What are the first few things to check? Fuel pump relay?

[Duke2.6]

More details might help others offer some ideas.

Assuming you crank with no throttle does it fire within a few cranks and assume a smooth fast idle of 1000-1200 revs within a 2-3 seconds.

Have you tried increasing revs to 1500-2000 before it stalls?

Duke