I have used it while cranking. During cold starts I would leave the primer out a bit and sometimes "catch" the engine with a bit more prime before the carb could get fuel to the engine. I have always heard that leaving a primer out could be a bad thing. I have had no trouble, but don't remember ever leaving it out. I will ask around the hangar fellas to see if it has ever happened to them.
Kevin -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Bray Sent: Wednesday, November 30, 2005 9:33 AM To: [email protected] Subject: RE: KR> primer Colin I had a push primer in my VP and have one in my 172, I have failed to lock it and didn;t notice any problem. I also feel as if I have some control of the amount of fuel I push in. When you push 1/2 or 1/4 of a stroke surely that is less fuel. Why can't it be used while cranking the motor? Steve Bray Jackson, Tennessee >From: "Colin Rainey" <[email protected]> >Reply-To: [email protected], KRnet <[email protected]> >To: [email protected] >Subject: KR> primer >Date: Wed, 30 Nov 2005 10:16:03 -0500 > >The manual primer can also create a no start rich condition if the pilot >doesn't get the knob seated and locked, which happens more frequently than >A&P's would like to admit. All the certified planes I flew with carbs had >this type primer, and half were so hard to push in and out after a few >years, that it would be easy to not have it seated by a low hour pilot. >This then allows the fuel to be "sucked" in through this primer port as >well, causing a rich condition and engine stall. Also you can't use this >type while cranking, only before. I do not like it because you do not know >how much fuel you are injecting, and you get all at once, like gradually >like the solenoid. The electronic solenoid can hang open true, but if a >high quality one is used, it should be reliable for many years trouble >free. Cold start solenoids have been used on VW engines in cars for years, >and would be perfect for those wanting a single injector after the carb... > > >Colin Rainey >[email protected] >EarthLink Revolves Around You. >_______________________________________ >Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp >to UNsubscribe from KRnet, send a message to [email protected] >please see other KRnet info at http://www.krnet.org/info.html _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to [email protected] please see other KRnet info at http://www.krnet.org/info.html *The information contained in this message may be confidential and/or subject to legal privilege, and is for the use of the intended addressee only. Any unauthorized use, dissemination or copying of the information in this message is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete this message.*
