Plug Colour

[AndyW]

what's the consensus on optimal plug colour these days? Just been out for a fang in the hills with Terry and now have 2 brown and one black one... Slater Mirage; std spec

 

[blab]

One black one, one white one, one with a little shite on.

 

[Laverdalothar]

depends if in your region you still have leaded fuel or unleaded. Unleaded should be slightly brown, black points to a to rich mixture. Check float-hights and other settings on that carb, especially if the choke slider closes completely and the O-Ring at the tip of the choke jet (the looong brass part in the float chamber that reaches into a small hole in the float bowl) is in place and not worn.

 

[Legs]

'And one with a little light on'. Means your bike is stuffed Andy . Time to get the compression tester and vacuum gauges out methinks.
Nice ride by the way, really enjoyed riding the Mirage.

 

[Dellortoman]

My plugs are all the same colour. The top bit is white ceramic with NGK written on it, and the hexagonal bit is shiny metal.

 

[AndyW]

Nice ride by the way, really enjoyed riding the Mirage.

It's a lot better now that the Phantoms are scrubbed in: will never go back to Bridgestones that's for sure... 8)

 

[Vince]

What Phantoms and what Bridgestones, I didnt think the new Phantoms came in Laverda sizes

 

[AndyW]

Pirellis: BT 45s
Try GC Motorcycles in Brisbane

 

[Tippie]

I?m pretty sure that with standard fuels today the only thing you can read from a plug is a problem, not tuning issues. Soot or oil on the plug are just about the only indicators. (Or bits of melted aluminium etc!).