XT660R Running very rich
 

Hi XT folk,

I was out with a mate today and his XT660R was spluttering and farting like an old geriatric. Black smoke exiting the exhausts and a heavily sooted plug. We rode on and when it came to filling up the 660 took 15 litres as opposed to my XT600's 5 litres. Any wise owls out there with any suggestions as to what the fault may be?

Cheers,

Dickyb