650 kat bad running

[pete650kat]

got the ht leads right? left coil as youre sitting on her is 1 and 4 and right coil is 2 and 3. gets me every time? have you checked wiring to coils from lom is correct also and the earth that sits by the horn can be a bit dicky. other than that sorry cant help but fossie will probably tell you by using the power of the force?

[pete650kat]

no worries, its not so much the horn but on my two 650's there was a large ring terminal that goes under the bracket that the horn mounts to above no 1 cylinder on the frame rail. best of luck anyway

[fossie]

The earth to under the horn mounting bolt is important all sorts of mysterious electrical goings on with out it.

However your issue is a blocked emulsion tube . Also check vacuum pipe from inlet end. Or indeed is it connected ? Modern fuel cannot be left. For a year with out gumming up , because the fuel is fed in between 2 and 3 carbs these get blocked .

[johnr]

also worth remembering that if its full of year old fuel its gonna run like a nail! modern petrol can go off in a few short weeks, so you might just have a load of crap fuel.