97 E320 missfire
 

I have a 97 E320 with the 104 engine. This thing had a missfire on #1 cyl. I replace the plugs with the recomended Bosch and the coil connectors. I still have a missfire on #1.
When I replaced the plugs they were worn out and I had p103 missfire code and random multiple missfire code.Now all I get is the P103 code for #1 cyl and the computer will not turn on #1 injector. I have checked the wiring between the injector and computer with no trouble found. Also I have inspected the secondary ignition and found no problems either.
I am assuming the computer has shut down #1 injector because of the missfire. What do i need to do to get this injector firing again? The only scan tool I have access to is a generic OBDll which will clear the codes and turn off the light but the miss remains and the light comes on right away.

Thanks in advance.

Move the coil and see if the code moves with it..

Good idea Arthur, you could also do the same with the injector,or even the plug. Just do 1 thing at a time though.
Gilly

moving coil
 

I'll try moving the coil when I get home tonight but I doubt it will change anything as #6 cyl fire and that is the cyl that shares the coil with #1.
I know #1 injector is not being pulsed because I put a test bulb in there and got no responce, also I hooked up my meter and got no pulse width reading but on #2 inj I got 2.8 ms at idle.

Oh yeah I dont know where the hell I got the idea that was a p103 code I think it 301. I'm slowly loosing my mind.

<< but I doubt it will change anything as #6 cyl fire and that is the cyl that shares the coil with #1.
>>

On waste spark systems , the plugs are in a series circuit , so one can fire to ground without the other firing.
But you may well have a bad injector or ECU trigger.
I would still try the recommend of coil swap.

You were right! I swaped coils 1/6 with 2/5 and the miss followed so I measured the resistance on the bad coil and it has a short between the primary side and the secondary. I will order a coil tomorrow. Thanks for the help I guess I needed to do my homework and use my head a litle more. Working on locomotives is bad for the brain.

Very good...