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| Help PLEASE... https://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=7326 |
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| Author: | rmarini [ Sun Apr 17, 2011 1:32 am ] |
| Post subject: | Help PLEASE... |
So...Here I am...in the sunny Okanagan Valley anticipating every moment until the boat hits the water next week in it's new home at a new marina slip. Today I threw on the muffs ands turned the key for the first time since winterizing. Followed all steps....so hit the key and after 6 cranks all 8 cylinders were purring. After about 30 seconds...the engine began to knock and ping very loudly and it then stalled out. I repeated this scenario 3 times before I stopped. It was "professionally" winterized at the Four Winns Dealer in October last year. They said that all I have to do is drop it in the water and turn the key....yeah right. So...please help....any suggestions? All lubricants and filters were replaced at the winterizing service. Bad fuel perhaps??? 5.0L TKS (Carb) Closed Cooling Thank you... |
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| Author: | ardy [ Sun Apr 17, 2011 3:14 am ] |
| Post subject: | Re: Help PLEASE... |
Sounds like bad fuel to me, anyone else want to chime in? |
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| Author: | 230 Mike [ Sun Apr 17, 2011 3:35 am ] |
| Post subject: | Re: Help PLEASE... |
First thing I'd do is check the oil level. I don't care what the shop was supposed to have done, after they work on it and before I turn the key, I check the oil. Human error and all that. If that's OK, then I agree with Ardy, bad gas or water in the gas. |
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| Author: | taz42169 [ Sun Apr 17, 2011 5:22 am ] |
| Post subject: | Re: Help PLEASE... |
Fuel water separtor changed? If so, you may have air in line. |
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| Author: | Walt [ Sun Apr 17, 2011 8:02 am ] |
| Post subject: | Re: Help PLEASE... |
When you say "knock" and "ping" are you refering to back-firing??? As above, check ALL fluids. If air in the line and you have an elec fuel pump, turn the key to run (without engaging the starter) for about 5-6 sec, then off 3-4 times to ensure the fuel sys is primed. Have you tried giving it a little throttle to keep it running? If it resolves itself after a few minutes and is still "responsive" to abrupt throttle changes, than was just air in the line. My last boat was carb'd w/ elec fuel pump. I had to do that after every fuel filter change. That's why I did it after the first outing, to ensure everything else was running OK, and reducing the number of variables to deal with if it wasn't. If not that, I may have to agree with bad gas, or water in the gas. Are you using any fuel additives to control condensation? Based on the idea of condensation in the fuel, I would recommend 1) getting it to "keep running"; 2) adding something to absorb (HEET, or whatever product these guys chime in with) any water in the gas and running it through while running on the muffs; 3) getting it to run on the muffs long enough without trouble so you are confident to get it wet, and burn up the last of the gas. Did you put the boat away "empty" or with a full tank?... in between? From my aviation experience, we put away planes fully fueled to reduce air volume and resultant possibility of humidity condensation in the gas tank. |
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| Author: | rmarini [ Sun Apr 17, 2011 10:16 am ] |
| Post subject: | Re: Help PLEASE... |
Thanks guys...as always appreciated. I will throw a batch of fresh gas in there and try the recommendations. |
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| Author: | rmarini [ Mon Apr 18, 2011 12:56 pm ] |
| Post subject: | Re: Help PLEASE... |
Well, disconnected the electric fuel pump hooked up a hose and supplied it 12 volts to drain the old gas from the tank, put in a new batch of gas and we are smoothly purring on all cylinders again... Cheers |
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