I Have a Piper PA 17 Vagabond that has a short 90 degree aluminum angle tube of approx 2 inch length each side that supplies cool air to the Mag and oil screen area. This tube is rivited neatly to the vertical baffle that is just behind the LH cylinder #2. I like it. Been there 30 years now. Ron Hynes, Alberta , Canada --- On Thu, 4/8/10, Donald <[email protected]> wrote:
From: Donald <[email protected]> Subject: [ercoupe-tech] Re: Hard Starting Engine when hot To: [email protected] Received: Thursday, April 8, 2010, 5:19 PM Some more description would help, does it fire at all when balking? Do you use both mags or only one when trying? And as John asked, does it do black smoke when it does start? Do you turn off the fuel valve when you make these stops? The first thing that came to my mind was the coils in the magnetos, shorting out when heat soaked. Both of them you ask, well yes maybe the condition that caused it worked on both coils. are the impulse couplings actually snapping when you crank hot? You might try opening up the engine side panels while you grab lunch, to see of cooling the mags helps or not. --- In ercoupe-tech@ yahoogroups. com, John Cooper <j...@...> wrote: > > On 4/8/2010 5:14 PM, bcflyer2003 wrote: > > when I am on long cross-countries, shut down to refuel or eat lunch, it > > refuses to start easily. > Bill: > > There are really only 3 possible causes. > 1) It's starved for fuel. > 2) It's flooded > 3) The mags are not working. > > 3 is unlikely since it (should) be starting on both mags and both would > have to fail. Still, worth eliminating. You could try starting on one > mag or the other and see if either makes a difference. > > That leaves 1 and 2. > > If your carb leaks while standing then 2 is likely the culprit and the > cure is to crank with the throttle wide open until it pops then close > the throttle and it should catch. > > If the carb doesn't leak then sitting hot could boil the fuel off or > cause a vapor lock. Here I would crank while priming. > > If your primer works properly, you should *never* need 4 pumps unless > your intent is to set the plane afire... > > Are you sure it works? If not that would compound number 1. > > Are you ever able to get it to start hot? If so, what does it do when > it finally starts? Black smoke? > > > > -- > John Cooper > Skyport East > www.skyportservices .net > __________________________________________________________________ Make your browsing faster, safer, and easier with the new Internet Explorer® 8. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/
