ECU error if injector disconnected?

[Constant Mesh]

I looked through the fault code chart and didn't see a fuel injector related code.

In the discussion of the unauthorized TB syncing there is commentary on adjusting the butterflies at 3+K rpm.

I've wondered if one could just disconnect two of the injectors (2 & 3) and run the engine on two cylinders during this adjustment? Running with 1 & 4 would provide a power pulse every crankshaft revolution.

With two cylinders the throttle valves would have to be opened somewhat more to maintain an elevated idle of say 1500 rpm during the syncing.

 

[supertankerm60a3]

Then repeat the procedure on 2&3 with 1&4 disconnected? That MIGHT work but it will result in a likely difference between 1&4 vs 2&3. With shortcuts like these (no insult intended) I would leave a sync to the pro's, or, just leave well enough alone.

 

[supertankerm60a3]

I have been thinking about the ECU error issue. First find out how much resistance is in the injector coil, then rig up a dummy load for the ECU to feed to. You still may get an error, some ECU's are pretty sophisticated at looking at things like induction induced vontage oscillations (I think, either way, the pulses that occure when a magnetic field around a coil and iron slug collaps.) if the ECU does not see that it can trigger codes but for a motorcycle ECU to be that AR about fault diagnosis is unlikley.

 

[Fred W]

I don't see this working real well. Even with two cylinders disconnected the engine is still free-wheeling, with no load on it.

Also, it seems to adjust up just fine, without disconnecting any cylinders, when the throttle plates are clean.

 

[Afast03nNJ]

I don't see any reason to disconnect or drop out a cylinder(s) for this.

Just rev it up, watch the mercury, bring it down, adjust as necessary and repeat.

I had no issues with heat, had a large box fan blowing at the rad.

The smoothness of the engine is amazing when the TB's are in sync from idle up to crushing RPM's.