Barry I think you've got it.

Funola- you may be describing the world as it should be, rather than the way it is. Cracking the injector lines did nothing. I was not getting fuel to the number one line no matter what I did. Cracking lines was the second thing I did after cranking far longer than usual -and this is on the first battery charge. Clearly, I had trapped air. Why I was unable to expel it is the question.

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1981 240D 4sp manual. Ivory White.