Mark, are you referring to fuel filters when you say filters? JR feg...@sbcglobal.net
----- Original Message ----- From: "Mark Langford" <n5...@hiwaay.net> To: "KRnet" <kr...@mylist.net>; "Corvair engines for homebuilt aircraft" <corvaircr...@mylist.net> Sent: Friday, February 10, 2006 3:39 PM Subject: KR> water in the fuel? > NetHeads, > > I flew my plane 1.3 hours yesterday, and during climbout the engine did > some fairly serious "cutting out" at various rpms that appeared to have no > correlation to each other. After cozying up to what passes for a big > airport (MDQ) around here, I started playing around with mixture, carb > heat, > and everything else I could think of (including flipping the fuel/ignition > swapout switch), and my final conclusion was that I have some water in my > fuel. I've had a few traces of this behavior over the last few flights, > but > yesterday it really got my attention. > > Here's my question: Has anybody else had water in their fuel, and if so, > is > the symptom that the engine cuts in and out rapidly and more or less > sputters and scares the crap out of you? And it comes and goes with no > real > relation to anything else? I'm not used to water in the fuel in my cars, > so > this is a new phenomenon to me! I can't think of anything else that > would > cause this, and the real clue is the fuel mixture meter drops into the > super > lean area while it's misfiring. Recorded EIS info merely proved that it > was > misfiring for some reason. > > Oh, you thought I was grounded and still waiting on that Mahogony tree to > grow? I still have the old Sterba prop, and the good news is that it's > not > really all that much different from the Sensenich from the vibration > standpoint (must have been something with my "balanced" 3100cc). I now > have > some idea of the difference in power differential between the 3100cc and > the > 2700cc, but it's going to take some number crunching to quantify it. > Bottom > line is 160 rpm static, but there's also with a 40 degree temp delta, > which > makes it an even bigger difference. > > Right now my plan is to spend the day tomorrow flushing the fuel system > and > filters, as well as the Ellison. I talked to Ben and he gave me his > blessing, since I convinced him I knew what I was doing. Well, maybe it > wasn't his blessing, but he pretty much assured me that if I took it all > apart, somebody of my experience level would be able to blow it all out > and > put it back together with no problems at all. Having rebuilt a whole bunch > of carbs from Solexes to Webers, this thing looks like a 5 minute job. > Funny thing is he said that if I removed the safety wire from the screws, > my > wife wouldn't be able to sue him over a faulty carb problem, which I'd > have > thought would have made him a happy man... > > Mark Langford, Harvest, AL > see homebuilt airplane at http://www.N56ML.com > email to N56ML "at" hiwaay.net > > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
