Kromke said:
Well, still dealing with the fuel problem... thank God for twins or I couldn't leave the dock. She arrived from Buffalo yesterday and we were rearing to go when the problem we thought we fixed by replacing squeeze ball continued as soon as we headed out.
Have narrowed it down to fewer possibilities to explain why the one line is not getting enough fuel. Ruled out were a bad squeeze ball (replaced) and anything wrong with the motor fuel pump (motor runs fine on other fuel line). As such, it appears problem originates somewhere before gas enters squeeze ball: racor filter, line itself or tank.
Advice on tips to troubleshoot these problems short of replacing entire fuel line, or racors. What is skill and time required to replace the entire lines? Could particle matter or water be clogging line or the racor filter? Do both tanks (123 and 75) need to be full?
Thanks.
My guess would be the Racor filter... and I would change both. I would also change the filters on the motors, they're in a transparent bowl, on the port side. They're available at your Yamaha dealer, or on-line.
I would also disconnect the fuel lines to the Racor, attach a primer bulb and pump out about a quart of raw, unfiltered fuel, into a glass container, from each fuel tank, (separate container for each tank). This will give you an idea of each tanks fuel condition. It will be from the bottom of the tank, and that's the worst. Sediment and water sit on the bottom.
Let it sit a while and inspect it. Color should not be too dark, (tarnished). Also look for a water split, (water will set on bottom). If there's no water, or very little, and the color is ok, just change the filter. If it's real bad and has a lot of water, (over 30%) you may need to get your tank drained and washed by a proffesional. You could also try pumping out as much as you can, untill it clears up. Of course, you'll have to have a way of disposing the bad gas. Then, add more fuel and keep changing the filters out every few hours of running, but that can be frustrating. Hopefully your fuel won't be that bad.
To answer your question about tanks being full?, no... they do not have to be full. Not a good idea to run them real low though. That's when you start picking up crap and any water.
Assuming you running both motors on 1 tank, (at a time) you can rule out the tank. On the other hand, if your running 1 motor on 1 tank and the other motor on the other tank, you might have an tank issue, or bad fuel, (old, water, etc).
Changing fuel lines shouldn't be a big deal. Many times, Ive replaced all fuel lines, when I've purchased a used boat. Just don't want to leave anything to chance. Basically both tanks have a 3/8" line that runs to a "Y" valve, then to the filter, then primer bulb, and then to motor. Pop your deck plates over the tanks pick up and trace the lines.
