Join Date: Jul 2008
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I am having problems with the boat. Each time I take it to a mechanic, it seems to come back with a new problem so I'd like to see if I can fix this myself.
The boat is a 1996 21' Wellcraft with a Mercruiser 4.3 LX AlphaOne. Thus far this week we had the starter replaced, and we replaced the blower and the horn. We tried to take the boat out again after this, and it started fine, worked perfectly for aprox. 45 mins after which the 20 amp ignition fuse blew. We replaced the fuse several times, and each time the fuse would blow again right away (within two minutes).
So we brought the boat back in, and had a look at it and here's what we've found:
First, we started the boat succesfully twice, but each time it died shortly thereafter. After dying the second time the boat will no longer start; it still rolls over, it just won't catch.
Second, there seems to be a short in the purple wire going to the ignition. This wire has a 12V load on it when the key is in "accessory on" position, and a variable load of 10-11 volts while attempting to start it. It heats up VERY quickly, and gets smoking hot. The circuit is as follows: It comes from the engine, daisy chains to several gauges (the tach among others), then goes to the kill switch, then to the ignition. We tried removing the kill-switch and all the gauges from the circuit, but the wire would still heat up while trying to start it.
Any assistance or insight anyone can provide would be greatly appreciated.
Last edited by kyoufu; 07-03-2008 at 02:10 AM.