85 3.0 Just Quits

tlag77

Recruit
Joined
Jun 6, 2012
Messages
2
Hi, I have an 85 sunbird with the 3.0 mercruiser, was out on the water a couple weeks ago and all was good. till I was wot and the boat just quit, would not start or even sound like it wanted to. So i figured out there was no spark, i put a new coil in it, and it started right up. thought i fixed it, no such luck, was out again the same thing in wot stalled and never started again. hoping somebody could point me in the direction to go. Thanks.
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,092
Re: 85 3.0 Just Quits

stalling caused by fuel or electric issues?
check man overboard switch/lanyard
key on, check for voltage at the + side of the coil
check for spark from the coil
check shift interupt switch
do the gauges stay on when motor dies?
do the gauges die with the motor?
remove flame arrestor, look inside carb and pump throttle. should see a healthy squirt of fuel if fuel is present
 
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