150 xp loosing spark

evin1

Recruit
Joined
Mar 26, 2009
Messages
3
recently had motor rebuilt. After completion took it out and it ran great. Then after it got up to temp (seems) it lost fire on starboard side. Let sit awhile and restared and it ran fine for another 5 min. Then lost fire on same sade again. Took it bak to mechanic. Checked spark and had no spart on all three cylinders of starboard side. He unpluged power pack from stator lead and said the spark was very weak. He just made a jumper wire and tried to get spark between them comming out of stator lead. He said stator was out. New one is 365.00. I took boat home checked spark the next day and had spark on all six again. Is this kind of behavior common from a stator/ I have had power pack do similar before. Took to lake and once again no spark this time on all six. Took flywheel off and had one wire off stator with bare wire touching metal. I also think that this problem was something he did when putting back together because spark was good before rebuild. What should i do. I have fixed the bare wire on stator. I have also checked ohms on stator and the coils arent open. Should be good. When they go out can they have spark at some time and not at others. This dosent seem likely to me. What do yall think? please help.
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: 150 xp loosing spark

First guess in stator and maby a pack. Your mechanic must be working without a manual and a meter. You need to check the ohms and voltage between the 2 sets of brown wires. Ohms should be 900 plus. Voltage output from between the 2 brown wires should be 150 or more, with a peak reading meter
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: 150 xp loosing spark

Electrical problems like this always happen when the engine gets up to operating temps. Components tend to fail when warmed up. When you get into checking the stator with a peak-reading voltmeter, I'd also check the peak volts coming from the timer base. It should output .3 volts.
 

evin1

Recruit
Joined
Mar 26, 2009
Messages
3
Re: 150 xp loosing spark

thanks it was the stator acting up on me. Put on a good used one and back in business.
 
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