I do not get my coolfire adjusted properly. Currently it runs with moderate power and makes a curious metallic rattling noise when idle. I tried different combinations of plugs/props/fuels, none giving satisfying results.
What kind of combinations do you use with this engine?
If this is a plain bearing engine, (what the heck is a Coolfire, anyhow?), then I would guess it to be like the old FP rattle. That is the sound of the crankshaft moving fore and aft dueing idle. Sometimes there is enough room to add a second thrust washer between the prop drive washer and the crankcase. This makes them a lot quieter.
Hmmm... serves you right for buying anything with the word "Hype" in the name...
:-)
-- Philip Rawson
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