To work on the fuel system you really need some reference materiel. On of the best sources for information on the Bosch K-Jetronic fuel injection system as it is used in the Delorean is the Delorean Workshop Manual section "D". The procedure for adjusting the air fuel ratio is in D:04:01-:15. You need some EXPENSIVE special tools to do this right. It is best if you can find a shop that will either let you use their equipment or will do this as per the book. My guess is that the adjustment is way off causing the problem. David Teitelbaum vin 10757 --- In dmcnews@xxxx, Senatorpack@xxxx wrote: > > > Hello DML, > > I'm helping out a new owner tune up his car and replace the fuel > injection system. We have reset the car back to factory settings. However we > have encountered a small adjustment issue. > > Installed new fuel distributor and control pressure regulator, etc., etc., > on new owners car. What is proper way to adjust air/fuel ratio? >