Mailing List flyrotary@lancaironline.net Message #51272
From: John <downing.j@sbcglobal.net>
Subject: Tach & injectors
Date: Thu, 20 May 2010 22:20:48 -0400
To: flyrotary <flyrotary@lancaironline.net>
Bill, Bob W conferred with Tracy and they decided to use the secondary coil wire and the tack goes to 0 when I do the coil check.  I didn't get much time to test today, I'm starting on the + side, as it will run warmed up with the fuse pulled and the injector switches off, if it is restarted, the fuse is in the wire to the primary and secondary injector switches, wired to Bob W's wiring diagram.  It runs normal when it is started initially (cold) with the fuse connected and the primary and secondary switches on and will stop by shutting off the primary and secondary switches.  Tomorrow I'll check to see if the wire is powered while cold with the fuse out then warm the engine and see if I can determine where the power is coming from, there needs to be a source for the current at normal operating temperature with the fuse out which is 185 water, 167 oil.  It is on warm restart when ever thing changes and the injectors are getting the + from some place other than the fuse.
 
Maybe I can test the injectors in the test mode and see if they click off and on, or just click once and are staying on from a continuous ground condition coming from the computer.  This will need to done at a fuel pressure of less than the 33 # fuel pressure indicated when the engine quits with the fuel pump off and the injectors on or the engine will be flooded.  JohnD
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