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1982 40hp merc NO FIRE

M

marina_mike

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"I have changed the stator, sw

"I have changed the stator, switch box and both coils all of which checked out to be bad. I have ohmed the trigger and it checks out to be good but still no fire. Whats next?

Thanks in advance!
Mike"
 
"disconect black/yellow wire a

"disconect black/yellow wire at switch box, that will test the key switch and wiring to engine. Are both magnets still on the flywheel?"
 
"I have to ask, bare with me,

"I have to ask, bare with me, you say no fire, are you checking the plugs for spark or are you saying it just won't start?
I have all the spec's for that engine to test everything but the switch box, you said there all new, do you need the trigger, coil specs?
The older stator style had the charging curcuit built into the stator, it is possible the rectifier can wipe out the spark, disconnect the yellow wire from it. You can find a test for the rectifier here, bottom right
http://www.themarinedoctor.com/cgi-bin//YaBB.pl
Put the top piston on TDC, does the timing marks line up with the pointer up front?
One more thought, when the flywheel was off for the stator, was it removed WITH inner hub or was it removed by un-bolting from the inner hub
"
 
"check the plugs with spark te

"check the plugs with spark tester, I have the specs for the coils and trigger, the trigger is reading 750 ohms and the coils are new. Timing marks do align and I removed the flywheel and inner hub as one unit."
 
"trigger test is dead on

st

"trigger test is dead on

stator test
bl/wh and grd = 120-180ohms
bl/yl and grd = 3200-3800
bl/yl and bl/wh = 3100-3700

retifier test (doughtfull)
disconect leads
test between grey and yellow = 65 ohms
lead to either gray or yl and grd = no continuity

when removing bl/yl wire on switch box, remove the one going to mercury tilt switch and to stop switch. Leave the bl/yl from stator hooked. good vidio

http://www.meegsonline.com/tmd/DVAmovie.wmv
http://www.themarinedoctor.com/CandS.wmv"
 
"turned out to be the trigger,

"turned out to be the trigger, I tested it in place and it appeared to be good; however after removing it the same test was performed and it proved to be bad. Thanks for the help."
 
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