The leaning feature on a certain model of carbs (help me out here guys) for the small Contis does not work, especially on the ground. Most have to turn off the fuel or ignition switch to stop the engine. Many people have the mixture control wired open by their mechanics. If the system works for you then that may be okay, but as Eliciam says, TCP is the only thing that helps.
Not only do you need to worry about the plugs, (which can be cleaned) but also the valve guides getting gummed up. Funny thing is that we really don't need lead in the fuel any more. With all this crap about measuring the carbon footprint we GA people put on the ecology, you would think they could come up with an unleaded fuel that we could use in the little engines. Heck, there are some big bore continentals that can run on 80 Octane and the autofuel STC is available. Problem is that the stuff we burn in our Chevys also wreaks havoc with rubber seals and other parts. There is a 92/95/97 no lead out there in the testing phase (in the UK IIRC) but we'll not see that anytime soon. Al DeMarzo Visit the Ercoupe Swap Page - Free and Easy http://www.ercoupeowners.com/swap/swapbook.htm ----- Original Message ----- From: robertbartunek To: [email protected] Sent: Wednesday, December 19, 2007 9:41 AM Subject: [ercoupe-tech] Fouled Plugs With the use of 100LL I understand there is some concern about fouled plugs from the lead content. Way back when I was flying round engines, we had a procedure on every shutdown to lean the engine to just prior to rpm "stumble" at about 1700 RPM for three minutes to "cook" the plugs and burn off the lead deposits. Anybody heard of a legal procedure like this for Continental engines?
