Originally posted by RR:
On most fuel injected cars, there is a fitting bolt on the end of the fuel rail. In most cases you can unscrew the fitting and attach a fitting with a rubber hose. That would be enough for sample fuel. Wondered if the e36 has this fitting?
As far as I know, those ports started showing up about the same time as OBDII ('96), so they're not on any current IT BMW's.

Grafton