Hey guys,

Currently helping a friend with his 1991 300CE with the M104 and CIS-E (think M103 fuel system).

Currently we have no spark to the plugs. I have put a multimeter on everything and this is what I have found:

I get 6v at the coil. I get 6v at the end of the distributor wire connecting to the coil. I get 6v to the distributor button in the center of the distributor cap.

I do not get anything from any of the plug wires. No spark, no voltage, nothing.

I am thinking that the cap is fried. He had the distributor wire get sliced by the fan and I'm wondering if it arced off the engine somewhere and roasted the cap. The rotor showed some damage in the form of nicks on the head and melting on the plastic part itself.

We have replaced the rotor already, but the cap is specific to the M104.980. Before we order a cap, does anyone have any other suggestions on what to check or what might be the cause? We do not think it is the EZL since we have 6v to the cap.

Thanks,
Colin