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1996 4.3 mercruiser

wndsofchng06

New member
Hello all! I've have my boat almost 4 years now. The first year was great, I bought it with low hours and new gimbal bearings, I replaced the manifolds, risers, and water pump. The boat was super reliable and fairly quiet. The next year the oil pressure fuel pump switch died. I replaced it, and the replacement switch kept causing a fuse to blow. I replaced again and it seemed to remedy that issue. By this time, the boat had sat for almost a year and it would start, but only at full throttle. Life got in the way and now fast forward to now, it's been 3 years sitting. I'm thinking first things I'm going to do is drain and replace the fuel, new fuel filter, and maybe even a new fuel pump. I am sure I will be back on here looking for advice. Thanks in advance!
 
high current from the fuel pump causes that switch to fail, Best to install a cube relay to power the fuel pump and the pressure switch to only power the cube relay
 
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