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Quote: Originally Posted by khan |
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please clarify. Your original article says to open the highend not the lowend. Thanks! |
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Khan,
I found where you saw the reference to highend and that is incorrect. I pulled up my original article and it is correct, lowend. Sorry for the confusion.
Tuning a gas engine isn't "rocket science", but there's a method to the madness. If your engine is equipped with a Walbro or similar diaphragm carb there are a few things that are consistant. You can start and run your engine with the highend needle completely closed. It won't run great, but I'll run. Of the two needles, the lowend does most of the work because it operates all the time even at full throttle. The topend only operates at just above mid-throttle and above. So, once the topend needle is peaked, it's done... the rest of the tuning will be on the lowend, which includes transition, and mid-range.