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Hotter Plugs

1361 Views 7 Replies 5 Participants Last post by  Bagged_camaro
My bikes running a bit rich.
Cylinders 1 & 2 plugs looks soft ashy black with fluffy white deposits on the electrode and the tip. And numbers 3&4 are black and almost oily, smelling like gas.

So short of taking the carbs apart and resetting the float levels and then balancing all 4 carbs, would a one hotter plug step help to cure this at all?
Its a 78 Suzuki GS550, and its running B8ES NGKs right now.

Ive rebuilt the carbs before, and adjusted the levels wrong im sure.


1 - 1 of 8 Posts
I think a B9ES is hotter. And yes I think that some of your cylinders aint firing. It could be just fouled plugs.
1 - 1 of 8 Posts
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