jstcrzyengh
Seaman
- Joined
- Jul 31, 2004
- Messages
- 55
Well, this weekend myself and two of my friends, one a navy diesel mechanic decide to tear the back of my boat completely apart, perform a tune up, install new larger poly tanks over the old steel ones, and fix the problems with the boat that we have been having.<br /><br />1. We found we were only running on 6 cylinders, well good reason for a lack of power and consumption<br /><br />2. the carb was toast the secondaries wouldnt even open up causing the engine to go lean at WOT, though we could never even get there.<br /><br />3. The last time we went out we "ran out of gas" and had to fill on the water, we came to find out that the tanks were completely full with fuel when we removed the tanks.<br /><br />4. The fuel filter had rust in it, so it was good that we were changing the tanks.<br /><br />So we went to removing every piece of "fluff" in the back of the boat. If you have ever seen the back of an IMP it is ALL fluff. It took three of us about five hours to just remove the interior pieces to be able to get to the tank. We than made a list of everything we needed and off to Boat us we went. They couldnt find my membership I just picked up 7 months ago and there computers were down, but I picked up the last tank they had that would fit the area and they told me to go to long beach west marine, so we leave huntington harbor, stop at norms to get line as we still think we are going out the next day, wishful thinking, we get to west marine they cant find me anywhere in their system so $109 later and I am ready to get towed if need be. Pick up the second tank, though smaller, we will still have 42 gallons of fuel, a 305 and a 19'6" boat, should be plenty for even backside of cat trips, we even pick up a new GPS.<br /><br />So we get back to garden grove about 8pm on saturday and start the ardious (sp?) journey or rebuilding. We get the new tanks in, everything is hooked up, we get the carb installed though the rebuilt carb I purchased is not quite the same quadrajet. It's missing the PCV line in the back of it and we had to create a custom bracket for it. We get the spark plugs in, and we think everything is kosher. We start putting everything back in. By this time it is literally 6am, the suns coming up and we assume, ok little sleep but some redbulls and some cuda hanging on the line and we will be fine. WRONG<br /><br />We keep trying and trying to get the engine to start. It turns over just fine and if primed the engine turns over and sounds great, but there is not fuel getting to the carb. We spend hours looking around. Finally I pull off the fuel filter to see if it is getting fuel. Nothing. So I assume its the fuel pump, $12 part, so we replace it. Still no fuel. Hmmmm Weird. We take the line off and try turning it over. The fuel pump is pumping. We are feeling plenty of pressure just no fuel. <br /><br />At one point we plugged off the loose vacuum hose that would have gone to the back of the carb to see if that was the problem. Success we had fuel, for about 2 seconds and it never worked again after that.<br />Also another issue is we are unable to fuel correctly at a service station. Is this normal? We have to pump, stop, pump, stop, pump, otherwise fuel will come shooting back at us.<br /><br />Short end to the story<br /><br /><br />No fuel is coming from the full tanks to the fuel pump. The only scenarios I can think or is:<br /><br />1. The air hoses for the tanks are somehow clogged thus causing too much vacuum for the mechanical pump, though it wasnt a problem before.<br /><br />2. It is some sort of vacuum problem, though I am not sure how vacuum at the carb would have anything to do with fuel not getting to the mechanical fuel pump.<br /><br />3. It is the switch valve between the two tanks that might have gone bad. <br /><br />4. The Mechanical fuel pump just doesnt have enough strength to pull fuel from these tanks efficiently
Next step was to get an automatic pump.<br /><br /><br />Any ideas? I would really like to at least get some sandbass on the boat this year 
<br /><br />We are pulling it all apart this week and hope to try new things. Than call in a professional if all else fails<br /><br />James
<br /><br />We are pulling it all apart this week and hope to try new things. Than call in a professional if all else fails<br /><br />James
