This is turning out to be a real puzzler. '87 760 turbo, B230 FT, had a couple of episodes where it wouldn't start after being shut off for just a few minutes. First time, after a few minutes it came back to life like nothing was wrong. Second time, after towing to a garage it refused to misbehave, so the mechanic gave it back after a couple of days of periodic starts, hot and cold, and no problems. A few days later, it quit again, this time it won't respond at all. We've replace the main fuel pump, fuel pump relay, fuel filter, radio suppression relay, and checked fuses. Pulled a spark plug and observed spark when cranking. Pulled fuel line from injector rail and observed fuel flow when cranking. What next? Time to call the wrecker again????