Engine won't turn off!

Beacham

Seaman Apprentice
Joined
Mar 20, 2006
Messages
46
Okay, well this all started when...<br /><br />well I was a little kid and wanted a big boat. I went through some small boats, and I got a big(ish) boat a few weeks ago and since then have been doing a lot of fiddling with the engine. I have some experience, and am pretty well aquainted with the sealoc manual, but recently enountered the problem in the subject line. the powerhead is a 1987 evinrude 225, that runs and operates well, but has some troubles. I have put about ten hours on the boat since I got it without any real trouble.<br /><br />however, I could see that a couple of the flywheel magnets had come loose and slid around against each other. I got the flywheel off, pried out all of the magnets, cleaned it up (lots of scraping), and replaced them with new ones, as per the instructions in the magnet kit and the advice of some fellow i-boat users. thanks! meanwhile, I noticed that the stator had a cooked coil, and recalled that the battery did not seem to charge while I ran the boat. so, I replaced it, as well as the power packs and ignition coils. both power packs and a couple of the coils had cracks in the potting, and I have had power pack troubles before, so I figured that I wold spend the money and effort in the name of preventative maintainance. further, I replaced the regulator/rectifier. again, easy while the flywheel is off, and again in the name of prevention. from what little I understand, a bad or aging voltage reg in this system can cook teh stator, so it seemed to make sense, since again, one of the coils on my stator was blackened to bare wire. <br /><br />SO, pretty much everything was just bolt-in and hook-up. ..or so it seemed. on re-assembly, the motor started and ran like a champ, but with the engine running, the voltage indicated 18 volts.it sits at 13-14 volts fully charged with the engine not running. but YIKES! the damned thing will not shut off! I cut the fuel at a petcock I installed to switch fuel to a kicker and waited for it to sputter out. of course now I am worried that 1) I flooded my carbs with oil, running the VRO with gas cut off and 2) that I have cooked some or all of the >500 bucks in ignition componentry that I have just installed. help! what did I do wrong??
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: Engine won't turn off!

Turning the ignition key to "off" grounds the power packs with the black and yellow wire and shuts down the engine. You may want to recheck that line. <br /><br />The system can be cooked by charger running over 18 volts, which is why people here keep emphasis on using good, fully charged marine batteries. <br /><br />Apparently maintenance-free batteries are a problem, but, more often the batteries are just old and weak.
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: Engine won't turn off!

double check the blk/yellow wire and make sure they got plugged back up correctly, that motor may also have a shift inturrupt switch that adds a bit of complexity.<br /> on the cooked stator, replacing a cooked stator without finding why it cooked just invites another cooked stator.<br />the main reason is bad cables or cable connections and weak batteries.<br /> do a voltage drop test on all the battery cables.<br />and check the battery cells for correct specific gravity.
 
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