Car already had sort of a stumbling issue, but always fired right up. On the day it happened I was driving to work on the highway and came to a stop at one of about 3 lights on a 20+ mile stretch. Car was idling rough, but when light changed green I went to accelerate and car died. I tried to start it up, which it did, but then died when I gave it gas. I adjusted the nylon nut by the gas pedal to bring the RPMs up to about 1500 + then put the car in D and let it drive off the highway to a gas station and got towed back home. Since its my DD and my only car, I've been able to keep mostly everything in good order. I swapped out the FD. No change. Swapped out the MAS relay, no change. However, I did just install 2 new pumps and a new fuel filter since it happened and still nothing, but I can't get it to start now. One thing which may help is that it seems like it want's to start if I spray a bit of gasoline on the throttle plate. So gas related maybe? If so, which part would cause this issue? I pulled the plugs today even though I just changed them earlier this month and I did notice that cylinder #6 was darker than the others, which is interesting, because I thought cylinder # 1 was giving me the issue. I am at a complete loss.

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1990 190E 3.0L