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Strange coil faults and sparking???

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Multiman:
You typing with your teeth again Roo?
I can drop over my old coils if you like?
One will defo ned the Ash treatment though

flatfour:
Each year I carry out a maintenance session on whichever older bike that will be used for the summer.

The sequence has long been to change the oil  and filter in year one, as well as checking chain tension and that all ancillaries work as they should. Tyres etc. are checked weekly in all cases.

In year two, I repeat the year one processes with the addition of a points/timing check, plug check etc.

In year three I carry out the previous year two processes and add in valve clearance checks, carburettor balance and cam chain tension, together with replacing spark plugs.

It is always the case that after the year three work problems seem to set in, often unrelated to the actual work undertaken. This year I found the charge rate to be low, so replaced the regulator/rectifier with a solid state unit that I bought a few years ago as a spare. The idle then became erratic, with variations of between 1,000 and almost 2,000 rpm at random - the rubber manifold between the engine and number one carburettor was leaking. Following the replacement of all rubber manifolds and the airbox to carburettor rubbers, the bike would not run on number one cylinder - this was due to a failed (new NGK) plug on that cylinder. Last time around (two years ago) the number one/four cylinder condensor failed.

Finally, we seem to be sorted out and I am looking forward the the next two years of (hopefully) trouble - free riding!

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