fishless Posted May 31 Report Share Posted May 31 About the boat, 2002 29ft Grady White, twin 200 Yamaha's. 4 stroke. Ran if for the first time on Fri after offseason work. At about 2900 rpm's the port side engine loses power. When I throttle up rpm's go down as if I'm backing down instead of throttling up. Engine doesn't stall. I just back down on the throttle and can then throttle back up to 2900 where it runs. Next, I switched over the aux tank. I was able to throttle up to almost 4100 rpm before she wanted to lose power. Same situation, I back it down to around 3000 and can then throttle back up to around 4100. Performance on the aux tank is improved but the problem is still there. I changed the fuel filters and took a sample from each. The gas in both looked cloudy while one had a small amount of separation suggesting water in the fuel. My dilemma, this is not my area of expertise. I tried a few attempts to siphon the fuel out yesterday. I'm sitting on about 40/50 gallons in the main tank and the same in the aux. Not sure how to get this out plus I'm in the water already and docked in the backyard. I pondered the idea of running the fuel low in both tanks and then add dry gas to both tanks. Is this a reasonable attempt to resolve the issue? "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
Billybob Posted May 31 Report Share Posted May 31 How does the starboard engine run? Link to comment Share on other sites More sharing options...
fishless Posted May 31 Author Report Share Posted May 31 13 mins ago, Billybob said: How does the starboard engine run? Starboard started to sputter as well. After I changed the filters starboard ran fine without issue. "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
NHAngler Posted May 31 Report Share Posted May 31 You should pull your boat and find a way to siphon the fuel using gravity to drain it. or... change and keep changing your water separator filter(s). I suspect it's full for that tank, assuming you have them. Confidence catches fish! The rest of it is just there to keep us busy. Link to comment Share on other sites More sharing options...
brushfly Posted May 31 Report Share Posted May 31 There are companies that can come onsite or on land and draw it out, google it for your area. Been there....FWIW, with a small hand pump, attached to the fuel line at the engine, I took out 20 gallons into jury cans in about an hour. With a few guys, maybe some beers, it can be done. Link to comment Share on other sites More sharing options...
fishless Posted May 31 Author Report Share Posted May 31 9 mins ago, brushfly said: There are companies that can come onsite or on land and draw it out, google it for your area. Been there....FWIW, with a small hand pump, attached to the fuel line at the engine, I took out 20 gallons into jury cans in about an hour. With a few guys, maybe some beers, it can be done. A neighbor suggested this and suddenly I felt foolish not being able to ID the fuel line going into the engine. I would easily do this and just listen to a baseball game while I did it. But I was worried about making the situation worse. "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
brushfly Posted May 31 Report Share Posted May 31 1 hour ago, fishless said: A neighbor suggested this and suddenly I felt foolish not being able to ID the fuel line going into the engine. I would easily do this and just listen to a baseball game while I did it. But I was worried about making the situation worse. Assuming you have twin outboards, wouldn't your fuel line be visible connected to the primer bulb at the outboard? That's where I disconnected mine, where the fuel line met the primer bulb lead. Link to comment Share on other sites More sharing options...
fishless Posted May 31 Author Report Share Posted May 31 50 mins ago, brushfly said: Assuming you have twin outboards, wouldn't your fuel line be visible connected to the primer bulb at the outboard? That's where I disconnected mine, where the fuel line met the primer bulb lead. Ok now I follow. Yes I have 2 bulbs. So you disconnected before the bulb or after? I asked because I have a hose clamp on each end of the bulb. I could see disconnecting after the bulb and using the bulb to pump out the fuel. If that would work brushfly 1 "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
Stryper Snyper Posted May 31 Report Share Posted May 31 Disconnect and hook up a small electric fuel pump and pump it out? mro 1 300 feet per second or 3000 feet per second, don't matter, it's gonna leave a mark !!!! Link to comment Share on other sites More sharing options...
put_em_back Posted May 31 Report Share Posted May 31 No electric pump unless its safe for gas (explosion safe). A lot of them will spark. I've seen a few videos with people siphoning liquid out of a tank using a hose in the tank and compressed air with an air blowgun to start the transfer. You could use an portable air compressor even if you don't have power at the boat, but you most likely do. Poke a hole in the side of the hose going into your container and blow in the direction that you want the gas to go. That air will suck the gas out of the tank and blow it into your container. You can pull the air gun out of the hose once the gas is moving. Quote:Originally Posted by Surf HunterI don't wanna grow boobies. Link to comment Share on other sites More sharing options...
Bergallmaster Posted May 31 Report Share Posted May 31 Another thing you could do is try to get about 10 gallons out then throw about 15 gal in of 93 octane. Afterwards go for a good run and try to burn as much as possible. That will dilute the bad gas and raise the octane of the remaining gas. Keep a spare fuel water filter on board. the human race has proved darwins theory of evolution wrong. we let the dumb survive. Link to comment Share on other sites More sharing options...
Billybob Posted May 31 Report Share Posted May 31 When was the last time you had the VST done? Link to comment Share on other sites More sharing options...
fishless Posted May 31 Author Report Share Posted May 31 22 mins ago, Billybob said: When was the last time you had the VST done? I haven't. "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
fishless Posted May 31 Author Report Share Posted May 31 1 hour ago, Bergallmaster said: Another thing you could do is try to get about 10 gallons out then throw about 15 gal in of 93 octane. Afterwards go for a good run and try to burn as much as possible. That will dilute the bad gas and raise the octane of the remaining gas. Keep a spare fuel water filter on board. I considered this last night. Run both tanks down close to empty. Add dry gas to both tanks. Replace the filters again and then add the high octane gas. "I was a waste of time dumbasses" Sevenxseventy1 Link to comment Share on other sites More sharing options...
giant basshole Posted May 31 Report Share Posted May 31 No one has asked if your tanks are good? They will have to be capped and pressure tested. I would rule out water leaking into the tanks. BLM - Bass Lives Matter Race - human like everyone else Link to comment Share on other sites More sharing options...
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