Erratic RPM then no electric

puwit321

Cadet
Joined
Aug 23, 2007
Messages
8
Hi there: I have a 2007 Wellcraft 180 sportsman with a 115 Yamaha 4 cycle outboard. I never had a problem with it until yesterday. After making a couple of stops in the bay, I restarted the engine with no problems. Then as I accelerate, the tachometer needle jumps around then goes above 7000rpm. I thought the tach needle was loose. At that point all electrics go out including radio and fishfinder. I would imagine the engine shut off to protect itself. However the engine was not reving high as my throttle was only minimal and the exhaust noise was low. This happened two times, then I was able to go home. Please advise what this problem can be. Thanks.
 

cousinabe

Senior Chief Petty Officer
Joined
Nov 13, 2001
Messages
765
Re: Erratic RPM then no electric

check all your cables. i would make sure they are clean and tight. I have seen problems like this with loose ground wires.
 

puwit321

Cadet
Joined
Aug 23, 2007
Messages
8
Re: Erratic RPM then no electric

Thanks for the reply. Do you mean the power cables connecting to the battery? To eliminate as much as I can I removed the cutoff switch on the battery terminal and connected the power cable directly to the battery. I hope that was caused the glitch because there was some white corrosion on it.
 
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