Help with an 89 Islander

[ghostrider]

Boat runs like a top once in a while it'll shut off make a lots of power checked all the connections everything seems to be tight

 

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[Bailey63]

Which engine? 

 

[ghostrider]

4/3 vortex it will shut down and it will be no power for a few seconds then it'll fire back up

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[Bailey63]

Could be a bad coil getting hot and intermittently sending spark .  . 

[ghostrider]

Yeah I was thinking that too but there is no power when you go to start it right back up there's nothing

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[Bailey63]

Could be bad connections from batteries to engine , clean where ground attaches to block and where positive attaches to starter . If after that when it does it check for power or continuity at main breaker in engine compartment.  It may possibly get warm and interrupt circuit but not trip . 

[ghostrider]

I was thinking a breaker myself but I will check the connections at the Block thanks for the help

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[L&M]

Check the main black engine harness plug for tightness & corrosion before you get too far into it. 

[ghostrider]

I never thought of that thank you so much

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[fisherdude]

my buddy 89 islander dose this too . its a omc and has a glass fuse in the wiring harness once in awhile it acts up , clean the ends of the fuse and its set till next time 

Edited July 18, 2017 by fisherdude

[Bailey63]

Lots of great ideas , I hope you find your problem! Let us know how you make out.