Hi

My 1994 S420 is having a no starting condition that have stumped

The condition; when I first start the engine it fires right up (usually after sitting for few hours or overnight) it runs for say 30 or so minutes and quit and wont re-start

While cranking no start, fuse in andno power to the pump and no clicking from relay

While cranking no start, fuse in relay out leads 86, 87, hot

Key on fuse out relay out leads 30 87 hot

Key on fuse in, relay out, leads 85, 86, 87 hot

Outside temp 98 pump temp 72 cold, running for 10 min temp 84

I pulled two codes the check engine light is not on

#7 (ignition system faulty – bank 1)

#19 (Injector circuit open or circuit short or emission control system adaptation at limit - Bank 1)

thank you