Glad you got it sorted! But how did that plug get so black - does anyone have any ideas? Time honoured laws of carburation mean the mixture was rich but this is not possible in EFI theory. Surely repeated failed attempts at starting while using choke would at worst oil the plug? And it's not a two stroke either. Am I missing something really obvious here?
Yes you are
When you design a good ECU you build what is called bat voltage compensation into it.
On an EFI setup everything is controlled by your bat voltage.
Your Fuel Pump Pressure and flow and the way your injector reacts. etc.
So you have a parameter which defines how injector pulse width is modified for every .1 Volt change in d/c voltage. But even this system only defines changes to Pulse width withing a window i.e. 10-16 Volts.
In fact when my RR and Bat went for a 6. I noticed the same rich fueling and black plugs.
All these symptoms would point to Mr. Singh having too much d/c voltage on his bike.
Now about Scooter Boobs Comment on Type of Plugs.
His view is ok for olld school bikes. Not the EFI.
Any Digital ECU / CDI which uses a Micro Processor to run. Must use a R type Plug & or Plug cap to protect it from EFI / EFI interfearence.
How bad is that Interference depends on how strong the spark is.
We have a CDI unit which can shut down all Electronic equipment in a 6 ft radius if not used with R type Plugs. And this includes other bikes and cars ECUs and your own bikes ECU.
On old school bikes you could dump the Resistor for a little more juice and pissing off the anybody with a TV or Radio. With the new school bikes you should keep the R if nothing but to protect your own ECU / Digital Processor from EMI and EFI.
THe thing is the EMI EFI effects the ECU is many ways. The worst way being it will shut the engine off.
On the heat Range issue. 6 sounds like an absurd number.
Why would RE use 6 on an air cooled motor. It makes no sense to me.
I would run a 7 or a 8. And then if I had fouling problems which I doubt. I would go back one number.
We run 7s on bone stock Liquid coooled engines. 8s on Liquid Cooled Engines with performance mods, and we even run 9s and 10s on fored induction engines.
My old 84 RZ runs 10s.
SIngh Ji.
I would still check your Bat voltage with the bike runing from time to time.
All the signs are there.
on my C5 I found the double earth straps and a projected nose.
If on installing this on your bike your Idle RPM went up. Then it means your engine actually likes the Plug. Just back off your Idle 1/2 turn. (On the EFI you will need a screw driver with a 90 Deg bend.