mercruiser 260 doesnt stop turning over when key is off

ringmaster

Petty Officer 2nd Class
Joined
Aug 23, 2007
Messages
125
my cousin just bought a motor with 50hrs on it. its a mercruiser 260 thunderbolt 4 with a alpha 1 outdrive. we was working on it today to do all the tune up stuff when we went to start it the motor kept rolling over when the key was turned off. the only way to stop it was to unhook the battery cables. now mind the motor isnt in the boat yet its on the floor in the garage. what would cause this? do i have a wire backwards? i have spark so i know that is good.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,574
Re: mercruiser 260 doesnt stop turning over when key is off

Ayuh,...

The starter solenoid is Junk,...It's Stickin'...
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: mercruiser 260 doesnt stop turning over when key is off

Stuck slave or starter solenoid??????
 

ringmaster

Petty Officer 2nd Class
Joined
Aug 23, 2007
Messages
125
Re: mercruiser 260 doesnt stop turning over when key is off

thanks that is what i was thinking. but just wanted to see what other people thought. thanks agian
 

JustJason

Vice Admiral
Joined
Aug 27, 2007
Messages
5,319
Re: mercruiser 260 doesnt stop turning over when key is off

double check that you don't have a sticking keyswitch as well.
 
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