Hello can anyone help me out ,I bought an old 318I E21 for my son to do up for his first car the car is not going because of fuel problem ,the previous owner tried to fix it but gave up ,I found not enough fuel at the distributor and replaced the in tank fuel pump by adjusting the 3 mm allan key next to the fuel body I adjusted the fuel distributor piston to a height where the injectors are spraying ,this is achieved by placing a bridge acros some plug terminals next to the fuesbox while this is bridged I have fuel spraying but no spark when this bridge is removed I have a spark but no fuel spray and car won't start what is the next step in tuning in to the problem could anyone send me on the right track thanks