Hi, I have a 1979 Yamaha Enticer that im having some problems with... when I took it for a ride today it wouldn't accelerate or go as quickly as normal and occasionally it would bog out. i thought it wasn't running on all cylinders so i pulled a spark plug lead and found that it was only running on one cylinder i then put the lead back on and both started running but only for a few min then it would quite again... any idea what may be causing this... I don't think its the park plug leads because i just replaced them last winter... any suggestions would be apappreciated.
Thanks
forgot to mention the plugs are new and it doesn't require fuel/oil mixing
Thanks
forgot to mention the plugs are new and it doesn't require fuel/oil mixing