- Joined
- Jan 2, 2009
- Messages
- 280
Can anyone help with a misfiring Norton?
Went on long run, 1600 miles, got some duff fuel in Switzerland, and damp weather. Emptied tank, drained carbs and bike seemed OK.
Misfiring a bit due to damp on setting off home, seemed to sort itself out.
On my return home the bike developed a constant misfire when idling. You can hear it on idle, sort of fluffing pop from the exaust, right hand pot only, intermittent, like it is firing every other time. When you increase the revs it starts to misfire more, going onto one pot, eventually the right pot coming back in, at about half throttle.
I have sprayed easy start around the manifold joints looking for leaks, checked the idle jet setting and taken air screw out and poked with wire, taken the slide out and checked the needle is in position. I have also checked the coil connections and also changed the ht leads (swopped them over). I have taken the cover off the boyer rotor stator to check the connections, all seeems OK
Any ideas?
Stu.
Went on long run, 1600 miles, got some duff fuel in Switzerland, and damp weather. Emptied tank, drained carbs and bike seemed OK.
Misfiring a bit due to damp on setting off home, seemed to sort itself out.
On my return home the bike developed a constant misfire when idling. You can hear it on idle, sort of fluffing pop from the exaust, right hand pot only, intermittent, like it is firing every other time. When you increase the revs it starts to misfire more, going onto one pot, eventually the right pot coming back in, at about half throttle.
I have sprayed easy start around the manifold joints looking for leaks, checked the idle jet setting and taken air screw out and poked with wire, taken the slide out and checked the needle is in position. I have also checked the coil connections and also changed the ht leads (swopped them over). I have taken the cover off the boyer rotor stator to check the connections, all seeems OK
Any ideas?
Stu.