ORIGINAL: Dauntae
Depending on tank location or many other variables not all engines have the problem BUT if it does then this theary IS valid, If this does happen this will fix it but it does not mean all inverted engines have this problem nor did I say they do, I have many inverted engines without problems but have had it happen with a plane with a higher tank location. WOW some people just want to shoot down everything that is not happening to them.
Dauntae
ORIGINAL: Artisan
ORIGINAL: Dauntae
If the engine is mounted inverted it sounds like fuel is pooling into the head, I just read a trick to fix it if thats your issue, Forgot who came up with it but put a few washers between the engine mount and engine on one side only to angle it a few degrees so the fuel won't be dead center of the head cooling the plug at lower idle. when the plug cools it will give bad transition until it heats back up at higher RPM'S
Dauntae
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Why doesn't fuel pool in the engines that run well inverted?
Lose this theory. It is not valid.
No real big deal. You pretty much got it right. Some engines are known for not wanting to run inverted. Othere putter along just fine. Most of the problem engines do indeed have the plug right at the lowest point. maybe after a few years of honest open minded observation he will come to understand that which he told others to lose. Not likely,just maybe.