99 X1 Ignition Problem

[mstrfrz]

the plug wires are new. I can swap them between cylinders and have the same problem. Continuity checks OK too. ECM has "VDO CONTROL SYSTEMS, INC." molded right into it, and is stamped "FOR RACE USE ONLY." Visual inspections of wiring can find broken, frayed, or burnt wiring. I can confirm my xray vision inspections of wiring with a multimeter.

Yes, the spark on the rear is INTERMITTENT.

 

[ophawk]

Okay, I have the answer.
The DDFI fuel injection, VDO/Wahlbro was the supplier for it stock, the Ignition is a Non-waste spark meaning that their are two coils in the coil pack, one for the front and the other obviously for the rear, your rear coil must be bad, if the primary and secondary wiring all looks and tests good.
find a replacement coil hook it up and see what it does.
Later
Dale

 

[kalali]

+1 on what OP said. I didn't know about the Wahlbro-VDO connection.

 

[mstrfrz]

OK... anyone go a spare coil?

 

[mstrfrz]

or suggestions for a good coil? There's no MSD for bikes, is there?

 

[mstrfrz]

Finally replaced the coil, and things seem much better. Are there othe ignition components I should check for wear?

 

[mstrfrz]

Problem remains. New coil, plugs, and wires. Are there separate ignition pickups? Could it be a bad signal to an injector or fuel pump? I did have an itake manifold leak fixed, but hasn't helped.

 

[martinwill]

Get ecmspy and a lead, a must have tool for fuel injection buells, with it you can reset tps/afv, run diagnostics and check timing etc etc

 

[mstrfrz]

I might as well have a dealer hook up for me. That seems to be a lot of trouble.

 

[mstrfrz]

Put in the factory ecm just to see. Same problem!!