Read My Plugs

A month or so ago I bought s set of 1-3/8 pipes for my Atlas from Walridge Motors. They are very good quality and fit perfectly. I don't know who he gets them from but he should keep doing that. Last Sunday I rode it 50 mi round trip up to the snow line and the pipes have a hint of straw color just past the first bend. The rest is as new.

I run a B8 in my Matchless G80cs and it always happy if the fuel is good. Rode it today. Sunny, above 50F. Two stream crossings, wet boots. Gas station just got a new dump of 92 Octane non-ethanol premium. Life is good.

If the weather is really cold, the motor should probably give signs that the jetting is lean, in the way it responds to the throttle - it can sometimes start to miss slightly.

I would read those plugs as a tad on the weak side ,and a degree or so over advanced ignition . Ok for our climate in the Uk but a bit risky in hotter climes.

Considering the additives in fuel these days colour alone is of little value. Why not ride to a facility that has gas analysers that they can slip down each silencer and then run the bike through a rev range - that will give a far better idea and it's quick and easy to do.

I'd be happy with plugs that colour
They are not white and chalky or black and sooty
As others have said,it's a lot more difficult to judge with today's fuel

Much depends on how hard you ride, how far and what the ambient is. If you are really worried
go a range colder. The way speed limits and traffic are now most bikes have to worry about slow
running and poor cooling. Old bikes that is.

norton bob said:

I would read those plugs as a tad on the weak side ,and a degree or so over advanced ignition . Ok for our climate in the Uk but a bit risky in hotter climes.

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Seconded, hard to make out the colour turn on the ground strap but it looks a bit too close to the base ring, double check your timing and perhaps retard a couple degrees