). I have owned an '89 turbo that used to start on the 1st or 2nd crank every time (just a tap of the key). Both my 8V turbos fire/d up first time ... "Click ... Boom", but IIRC, my 8V 900i needed a couple of cranks ... "Click ... Cough Cough ... Boom" :cheesy:
I think it's to do with the fuel pre-pump. When you switch the key to the pre-crank position on the turbo, you can hear a humming from the fuel pump which then stops after about a second or two until you fire up. On the NA model, the fuel pump does not start until you turn the key ... hence the extra couple of cranks. It might be an age related thing though, since both my turbos have been post-facelift and the injection was a flat nose.
I think it's to do with the fuel pre-pump. When you switch the key to the pre-crank position on the turbo, you can hear a humming from the fuel pump which then stops after about a second or two until you fire up. On the NA model, the fuel pump does not start until you turn the key ... hence the extra couple of cranks. It might be an age related thing though, since both my turbos have been post-facelift and the injection was a flat nose.
