I have 1978 450 SL that does not start. I changed the fuel pump, accumulator, filter and rebuilt the fuel distributor. Controlled pressure to the warp um regulator is good. I can hear the fuel injector's noise when the air sensor is depressed with the ignition key ON. Checked the voltages across the 4 & 6 ohms resistors including the coil and they are within the specs. There is a spark in the spark plug when pulled out and grounded. The engine turns but will not start.
I need help in getting the car started.