flyrotary@lancaironline.net Mailing List Archive

Bill, your storry sounds very familiar to me. Been there. I discovered that the vacuum hose that goes into the MP sensor on the EC2 was not connected. On start up the EC2 was getting 30" of manifold pressure and was delivering fuel to match it = flooded plugs. If you have vacuum tester, disconnect the vacuum line from the throttle body or the manifold and see if it will hold vacuum. You may have a leak? Buly From: Bill Bradburry <bbradburry@allvantage.com> Date: 2007/02/22 Thu PM 04:10:59 EST To: "Rotary motors in aircraft" <flyrotary@lancaironline.net> Subject: [FlyRotary] Flooded plugs I am gradually learning how to start my engine. When I began, I started with a couple of taps on the primer and with the mixture set full rich. I flooded the engine and that started a cycle of remove plugs, blow the fuel out of them, fiddle with the mixture, cold start, or primer, then try to start, remove plugs...etc.. I was getting pretty frustrated....So I called Tracy! One of the things he suggested was trying new plugs...So I bought a set, but decided to clean the Renesis plugs in a sand blaster and try them one more time. I also decided to set the mixture about 1:30 instead of full..no joy...I moved it to about 2:00...It tried to start!....I moved it to about 3:00...RRRIIIPPPPP! Yea!! I had been using too much fuel on my starting attempts and, as I read in the archives, sometimes when the plugs foul, they will need a good cleaning or replacement. Tracy tells me that sometimes after you get the engine running with good plugs, it will also run if you put the bad (cleaned) ones back in. Now...Who knows what factors affect the HP calculation that Tracy uses? I still do not have the engine mixture properly trained, but I decided to check my static RPM today. 2 Blade Performance prop..76X88. I only got about 4200 RPM, but the HP at one time was at 257!!! :>) Without the cowling on, the prop blast is directly into the throttle body and at one time I also saw 31.5 inches of manifold pressure!! This could turn into a lot of fun! I need to get back to trying to build the plane..:<( Any and all thoughts are welcome! Bill B -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/