Hi Folks this 75s is running like a dog, black sparkplugs chuffing and puffing up to 3000 rpm then clears up a bit .Could this be linked to the fan problem.

Could be the temperature sensor relay, the big white one next to the starter relay.
Or, better start with that, the big connector of the computer is loose/oxidated.

Arlina wrote:Could be the temperature sensor relay, the big white one next to the starter relay.
Or, better start with that, the big connector of the computer is loose/oxidated.

Thanks Princess 

Happy days  Faulty Temp relay big box, fitted S/H unit from Motorworks, Hey Presto, fault fixed. AND engine now running sweet as a Swiss Watch Thanks all for your advise.    Stay safe 

Well, get off the internet and start riding

Arlina wrote:Well, get off the internet and start riding