403 Sparking Plugs
I am using the "hotter" plugs for touring.
Fuel mixture recently checked was correct although exhaust has been high in HC. Oil consumption is minimal.
The Solex carbs were re-built by Carburetter Exchange of Leighton Buzzard in 2014 so should still be in good condition. I did have a subsequent problem of flooding due to dirty fuel (grit under needle valve) but this was resolved by an in-line fuel filter. Having said that, I did have a temporary unexplained reoccurance which seems to have cleared but may well have contributed to the fouling.
I will follow up with a check on fuel mixture and ignition health. For the moment, whilst the plugs are still clean, we are running well.
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