ZeroClient wrote:
Its hard to tell. Plugs with a lot of miles on them don't read out very well. Indeed there is excess build-up from high throttle operation. It could be slightly rich fuel, or possibly a thick mix of oil greater than 40:1 ratio. In any case it looks safe to me if the
Engine is able to clear out.
Is the plug really wet around the base and threads? If so, its very rich. Actually an extremely rich condition tends to show as lean on a photo. Extremely rich will not burn and just be overly wet when checked. In some cases the plug will come out white but very very wet indicating a very rich misfire is happening.
If its wet/rich, try raising the clip on the needle 1 or 2 positions to lean out 1/4~3/4 throttle.
If the plug is DRY, then it is LEAN. If its dry/lean I would try a carb needle that is 1~2 steps thinner. IE go from a EEC to an EED needle but only go one step. Maybe lower the clip position 1 or 2 spots to fatten the 1/4~3/4 section and see how it runs from 1/4 to 3/4 throttle. If it runs better between 1/4-3/4 but then doesn't clear out at full throttle then lower your main jet 5 points or so.
Make one jetting change at a time and write it down!
Rock on!
Thanks! The ground electrode (the curved hook on the very bottom of the plug) and like I said the bottom thread or so where wet when I pulled it out. Even the new plug that is in the machine right now. I pulled it out and it’s wet on the bottom.
Again I’m an old gear head car wise and understand cars and not two strokes but from the way I looked at the first time...that was my thought that it was running rich.
Driving it at low to mid speeds (low to mid throttle settings) it seemed like it was not loading up but just seemed like it was a little lazy at times but when you nailed the throttle the thing just hauled butt!
I’ll take your suggestion and adjust the clip on the needle. I’ll move it up one notch first and run it and see how it runs. Then if I have to I’ll move it up one more.
Yep I understand about taking notes on settings and changes and only doing one thing at a time. Did the same thing on the cars when we would do tuning with jets and the power valves etc...
When I get to it I’ll post back as to where the settings where to start with etc...and keep you guys up to date on it. Thing is we have stuff going on for the next week or so and I know I won’t get to it for a little bit so be patient.
Thanks again! SB4x4