KevTrem
Well-Known Member
- Messages
- 897
- Location
- Newcastle, UK
- Thread starter
- #21
On that note then, will leave it alone, I'm happy with the tune, it doesn't cackle on full throttle. I was tuning until the cackle then back 16th of a turn on both engines. On the low needle I set it so that it responds quickly and cleanly to thottle servo from idle. Hopefully this is right.
I was going to lessen the oil ratio to reduce the foul on the plug. Obviously still tune the carb appropriately, but I run 25:1 and see all over that people think that's too much oil, so was gonna try 32:1 or what ever is the next mark on my mixing bottle.It will not. Go back and read Seand's post #11. It speaks facts about oil ratio and plug fouling. Trying to lessen your oil content percentage in an attempt to "lean" your engine running condition is going about it wrong. Stick with whatever oil ration you prefer and tune your carb for best acceleration behaviors. I don't like suggesting "plug color" as i said its not the best way to accurately verify a tune, but if your plug insulator is a dark brown, and you don't hear any high rpm "crackle" (too lean), you have a decent tune for your average rpm operation. The "plug chop" test is the most accurrate method for verifying your peak and "loaded" engine rpm tune.