OK...'91 300E again here...replaced fuel acccumulator and car starts on first time almost everytime. However, on the occasions where it doesn't start on first crank, for some reason, I have to long crank it and give it gas until it starts. What could be causing this? Check valve? Leaky injectors? EHA? I noticed that my daughter's '87 300E has a much stronger crank when you turn the key and mine seems weak...could battery amperage come into play? Hers is older, more miles, and starts right up STRONG!