I have a temperature specific starting problem with this car which is getting worse. Last winter it started fine. When the weather got warmer (warm enough for the cold start injector to be out of the loop) it took several seconds of cranking to get going. Now that winter is back I expected it to start okay again, but now it starts on the fuel from the cold start injector and will starve right away and die - running for only 1 second or so. If I keep cranking even after it seems to start, it will start, die, crank for a few seconds just like in the warmer months, then eventually catch and run fine. So it seems that the problem is definitely fuel related, as if the pressure is not being maintained while the car sits and the fuel in the system isn't catching up to the fuel from the cold start injector. I'm curious though - if system pressure was down, would the cold start injector still have fuel to shoot?
There is no gas smell under-hood or anywhere else. Two years ago I replaced virtually the entire fuel system - fuel pump (this is an early 16V with only one pump), accumulator, filter, injectors, EHA. My first guess is the accumulator, even though it was replaced previously, but before I go replacing parts based on guesses, I though I'd tap the vast knowledge base here.
Any other likely culprits?
TIA,
Bill Balmer
1986 190E 2.3-16 first 16V in the US featured in Car & Driver March, 1986