Once Bitten
Recruit
- Joined
- Mar 5, 2004
- Messages
- 3
Need help in diagnosing a problem with my sons motor.<br />Here is the relevant info:<br /><br />1983 Evinrude 25hp Model: E25ELCTD<br /><br />Original symptoms: <br />Stopped running while underway. Would not restart.<br /><br />Actions taken:<br />Round #1: Disassembled and cleaned carb, replaced most <br /> fuel lines, filters, plugs.<br /> Results: Would try to start on occasion if starting fluid is<br /> shot into cylinders. Would not continue to run.<br /><br />Round #2(sat idle for 8+ mos): Rebuilt fuel pump, rebuilt carb, replaced<br /> remainder of fuel lines, replaced pump bulb, replaced control<br /> box (flaky key switch), pulled flywheel and inspected stator. <br /> New plugs, fresh gas. Kill switch (lanyard) removed from circuit.<br /> Results: Started and ran great(on hose) for about 10 minutes. Started <br /> running rough and died. Has not restarted since. <br /><br />Current conditions:<br /> Compression: 115psi(#1) & 114psi(#2). Holds pressure for<br /> 2+ minutes.<br /> Spark is weak to non-existent.<br /> Stator resistance measurements slightly high(according to Clymer<br /> manual. Measurements made with 41/2 digit DMM:<br /> Yg to Y = 1.08 ohms Target = .22 - .32 ohms<br /> Yg to Yb = .56 ohms Target = .22 - .32 ohms<br /> Yg to Gnd = infinite Target = infinite <br /> Attempt power pack output test per manual using same DMM. No<br /> voltage measured.<br /><br />Thanks in advance for any advice!
. first remove the black/yellow wire from the pack circuit. do this by either unplugging it if it is a single wire or pushing the female socket from the rubber(amphenol) connecter then plug the pack back up. it should be on a 3 wire with an orange and an orange/blue as well.<br /><br /> that just removed the kill circuit in its entirity. retest spark. if you have spark, trouble shoot a kill circuit short to ground. if no spark test the brown and brown/yellow wires from the stator to the pack. should have about500 ohms or so. the sensor coil should have 40 ohms or so. sensor coils are white/black and black/white. test each wire from the connector from the stator to ground. none should show continuity to ground. you vcannot test pack output with a standard DMM. at best you have to use a DVA adaptor.you should have a type 2 magneto with a sensor coil. I dont have my manuals but I think thats what it is. <br /> try that and see if it helps. the same ign was used from about 79 to about 85 0r 86 on the 20-40 hp models.<br /> good luck and keep posting.<br /> Ps all was from memory. if someone else has a different view let me know. I was looking at a 79 35 while remembering