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Old 07-15-2013, 06:44 AM
Mark rsa2au's Avatar
Mark rsa2au Mark rsa2au is offline
TT Enthusiast
Join Date: Mar 2013
Boat: Mastercraft X5 2001. 310hp preditor
Location: Australia
Posts: 178
Originally Posted by JimN View Post
What additives are in your gas when you buy it at the pump? Whatever it has, it's attracting a lot of water and I think it's amazing that the pump lasted as long as it did. I would recommend taking a fuel sample before running it again. If you find water, remove it from the gas. If you see a milky layer in the gas, remove ALL of the gas- this milky layer is due to "phase separation" and not only does it not burn well, it doesn't pass through the filter as well as clean gas (assuming the 5 micron filter element is on the pump).
JimN, I think the boat sat arround for a few years with an empty tank. The fuel here in Australia does not contain any "Special" additives that I know of, and I stay away from the ethanol blends.

I have pushed a number tanks through the motor so far (at its worst I was going through 2 tanks a day) and looking at the fuel in the tank it was crystal clear all the way to the bottom. There was what looked like sand (rust flakes) on the bottom and I syphoned these off from the open hole. I have also pumped a few bottles of fuel system cleaner through over various fills so hopefully there is no residue left. New filter, cleaned and checked pump, strainer clear, and we are good to go.

On the subject of scheduled maintainence I doubt much was done over the last few years, but it all looks good with no rust, nothing broken, and other than finding the causes of the above issues seems ok. Pulls like a freight train, and when running properly is as smooth as silk.

I am getting there.. Persistance beats resistance! Now all I need is above freezing temps to give it a test run... know any weather gods?
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