you guys are a weird bunch!
Seriously I'm baffled with this issue from the start. Why oh why do so many have problems with the Bosch plug?
My electra still runs on the initial Bosch plug. Bike fires up first kick, always. Rain, shine, cold, hot, whatever. An audience does not scare me off, nor starts a mild panic: prep and kick, there she blows.
The mileage is good also. I get an average of 27 kpl for mostly short runs, and a definitely not economic style.
Every 3000 km plug is cleaned.
Currently at 21000 km. I'm considering to detach it to reserve on the next service while it still has life in it. Replacement will be an original Bosch, an obvious choice given its state.
You may subtract 1000 km from that 21000 km. A year ago, reading all the bad reports I tried a BPR6ES. It made no impression. There was no significant improvement. To be honest, it hinted not to be as long living, which after all is logical and not a big issue considering the price is nearly a quart of the Bosch plug.
So, do I have the odd one out, the one that slipped through Bosch's quality control? The one that got away?
If not, there must be a detectable cause. Could it be the ethanol?