overheated merc now working but cutting out

C

catmania

Seaman
Joined
May 22, 2003
Messages
59
I had a little trouble with my big inline 6 merc a couple weeks ago, it overheated very temporarily when kelp clogged the water intake. I pulled the leg and replaced the water pump just incase then got it running. However it now occassionally cuts out, just dies as if the switch has been thrown. After a few minutes I can get it going again, but after a coulple more minutes of normal operation it will again just cut out. Could this be the power pack damaged by the overheat? Is there anyway to test a powerpack? Could it be something else? <br />Thanks<br />Ohh the motor is a 1966 950SS keichoffer tower of power
 
T

The Marine Doctor

Commander
Joined
Jul 25, 2003
Messages
2,177
Re: overheated merc now working but cutting out

I would start with the ignition switch. Is there any play in the key?<br /><br />Possibly look for a shorting wire on the engine aswell..might have burnt through.<br /><br />TMD
 
C

catmania

Seaman
Joined
May 22, 2003
Messages
59
Re: overheated merc now working but cutting out

key and controls in good shape, i have been looking at wiring on the motor and everything looks to be in good shape, it got hot but not hot enough to burn thru wire insulation. I dont know how to test the power pack tho and i understand they can be susetable to high heat, is there anyway to test it or should i just go ahead and replace it?
 
G

greasemonkeyozi

Petty Officer 1st Class
Joined
Jul 16, 2003
Messages
282
Re: overheated merc now working but cutting out

In time, those power packs or switch boxes can go out occasionally due to over heat from the motor. <br />Try this little troubleshooting guide. If one plug is not firing, you have a bad switch box, or power pack, whatever you wanna call it. If no plugs are firing, the problems the stator thats under your flywheel.
 
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