So with southerly squalls whistling round the shed I decided to leave the helmet on the shelf and give the old GL some love with some well deserved maintenence...
This is what I found when I removed the carbs:
There is blackness on the inside of the inlet manifold and coming all the way back up to the carb and marking the vacuum piston and carb body.
The blackness isn't heavily oiled and only some is removed with petrol or carb cleaner. More of a stain.
This has been happening for a while and I have noticed it getting slowly worse over the years on all cylinders but far worse on number 1, which always runs a little advanced.
So what do we reckon? Valve guides? Timing? Old age? Signs of impending doom or just a well used motor?
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