E-10 fuel problem i think

[NAUTIQUE-210]

OK I HAVE A 1999 NAUTIQUE SUPPER SPORT WITH THE FUEL INJECTED PCM 5.8 HO, I HAVE NEVER HAD A PROBLEM WITH IT UNTILL NOW THE ENGINE HAS ABOUT 330 HOURS ON IT, I HAD A BRAIN SNAP AT THE FUEL BOWSER AND PUT A FULL TANK OF E-10 AND RAN IT THAT DAY WITH NO PROBLEM THAN STORED THE BOAT FOR ABOUT A WEEK THEN TOOK IT OUT WITH THE REMAING FUEL IN IT, RAN IT FOR THE DAY THEN RITE AT THE END OF THE DAY IT STARTED TO IDLE REALLY ROUGH AND LOSS A LITTLE BIT OF POWER FROM TAKE OFF BUT ON THE PLANE IT WAS FINE AND AT HIGH RPM FINE IT ALSO STARTED TO SPIT FUEL OUT THE EXHAUST AND YOU COULD SMELL THE FUEL WHILE WAKEBOARDING, SO I SYTHINED ALL THE REMAING FUEL OUT CHANGED THE PLUGS AND THE FUEL FILTER IN THE (F,C,C) FILLED IT UP WITH 95 OCTANE AND TOOK IT OUT TODAY IT WAS BETTER BUT STILL SPITTING FUEL OUT EXHAUST AND THE ROUGH IDLE IS BETTER BUT STILL THERE AND IT TAKES A WHILE WINDING OVER WHEN HOT BEFORE FIRES, I SPOKE TO A MACANIC TODAY AND HE SAID PUT SOME INJECTOR CLEANER IN IT AS THE E-10 COULD OF DISRUPTED THE SPRAY PATTARN OF ONE OF THE INJECTORS AND ITS (DRIBBLIN) FROM A BIT OF **** STUCK THAT THE E-10 HAS DISRUPTED AND THE COMPUTER ALSO COULD OF RE-MAPED IT SELF AND NEED TO RE AJUST IT SELF WHAT DO YOU GUYS THINK
PLEASE HELP

[swc5150]

One tank of E10 shouldn't have that type of effect on an engine. Some PN members don'thave any choice but to run it, as ethanol free fuel isn't available in their area. I certainly wouldn't want to run E10, as the drying properties of it aren't good for an engine. With that said, I don't have any theorys on what could be going. Wakeslayer may pop in with some advice. He always seems to have good insight to engine problems. You could always send him a pm for advice too?

[DanielC]

STOP YELLING!!!

Now that is out of the way, if this is your first tank of E-10, it could clean out a lot of crap in your fuel tank.

What engine do you have in your boat? Is it the GT-40 engine?

When you changed the FCC, did you find any water in it?

Here is how to check the fuel pressure on a GT-40:
http://www.planetnautique.com/vb3/sh...=fuel+pressure

Do that, and report back.

[91xl]

ethonal degrades rubber components and attracts water i would think its just a quincedence that it happenend then. i would suspect a fuel control issue. starting next year ethanol free fuel will no longer be available because of a government mandate

[shag]

I hate having to use ethanol fuel/it is a joke. I would not think that just sitting for a week would cause the above problem though. The fed is getting ready to approve E15. What joke. Make our vehicles less fuel efficient, so we use more fuel. Each gallon of fuel is taxed = more money for the governments.
Just my .02 - sorry to vent.

[NAUTIQUE-210]

STOP YELLING!!!

Now that is out of the way, if this is your first tank of E-10, it could clean out a lot of crap in your fuel tank.

What engine do you have in your boat? Is it the GT-40 engine?

When you changed the FCC, did you find any water in it?

Here is how to check the fuel pressure on a GT-40:
http://www.planetnautique.com/vb3/sh...=fuel+pressure

Do that, and report back.

hi thanks for the help
yes it is the gt-40 engine
i hade to remove the fcc and put it in a vice to undo (broke 2 filter pullers lol) so i was to busy swaring at it to check when i got it out, i had a quick look at it dont remember any water but

will have to do fuel pressure check after christmas busy busy,and my missis will kill me if i touch that boat christmas day

do you think it might be a half blocked injecter messing with the spray pattern
ill put some injector cleaner in it cant hurt write
thanks for all the replys ppl

[DanielC]

I not not think E-10 is near the problem a lot of people make it out to be.
I have over 2308 hours on a 1997 Ski Nautique, and I have been running E-10, for almost all its life.
However, I live in Oregon, and the humidity is not near as bad here as it is in Florida.

Having said that, the first tank of E-10 will clean out any stuff in the gas tank that dissolves in alcohol, but does not dissolve in gasoline.

I do not know how empty you let the tank get, but if you run a gas tank to empty, there is some sediment that normally just gets stirred around in a larger quantity of gas, that as you get close to running out of gas, can get sucked up in to the fuel system.

[horkn]

I not not think E-10 is near the problem a lot of people make it out to be.
I have over 2308 hours on a 1997 Ski Nautique, and I have been running E-10, for almost all its life.
However, I live in Oregon, and the humidity is not near as bad here as it is in Florida.

Having said that, the first tank of E-10 will clean out any stuff in the gas tank that dissolves in alcohol, but does not dissolve in gasoline.

I do not know how empty you let the tank get, but if you run a gas tank to empty, there is some sediment that normally just gets stirred around in a larger quantity of gas, that as you get close to running out of gas, can get sucked up in to the fuel system.

I can assure everyone that E10 is not creating the problems many people are blaming it for.

I've been running e10 in all my toys ( 2 stroke sleds, jet skis, chain saws, snowblowers, weedwackers, and 4 stroke small engines, my 78 martinique and all the cars I have owned in the last 20 years. I've never had one "blow up" from ethanol mixed fuels in the 10 % range (E10).

About the only issue ethanol can cause ,other than being slightly more harsh on rubber and other seals, is that the ethanol will clean any crud stuck in your fuel system from years of impurities in the regular non ethanol fuel. When switching to E10 from regular gas, expect to change a fuel filter or 2. But that is not the ethanol's fault, it really is the fault of impurities in the gas you had been putting in the tank.


Now, on the snowmobile site I am on, one guy SWEARS that e10 took out his friends newly rebuilt skidoo. The again he swore ethanol was the root of all evil as well. He's wrong, and just needs to realize it.

This same guy also does not realize that the ethanol won't allow his carbs to freeze up, which could actually burn up a 2 stroke sled motor when a carb icing occurs.


One thing folks need to remember is that corn is a horrible food source and is largely indigestible to both livestock and people. Energy extracted from corn is far more efficient than energy from digesting corn in creatures.

Once making ethanol from algae is more cost effective, the complaints over e10 will drop to the only real issue of slightly less fuel mileage in older motors not designed to use ethanol. Once more engines are designed torun on E10 or more that argument will fall away too.

[NAUTIQUE-210]

e-10 problem i think

ok thanks for all the info on e-10 but back to my problem of my boat idleing rough and being very fuely when wakeboarding any ideas bi of **** stuck in injector or bigger problem

[DanielC]

Checked the fuel pressure yet?

GT-40 engines do not have feedback on the Fuel/Air ratio to the computer. The computer just takes information from a bunch of sensors, assumes the fuel pressure is correct, and opens the injector for the proper amount of time for the demands of the engine. If the pressure is off, the computer does not know this.

You have to know the fuel pressure to diagnose any driveability problems with the GT-40.

[nms1991]

Check your spark plugs make sure they are not fouled out and firing on all cylinders. if your #2 and #3 cylinders on one side or #6 and #7 are fouled look and see if there is water on the end of the plug you may have a bad riser gasket.

[NAUTIQUE-210]

e-10 fuel problem i think

thanks again i should be albe to get my hands on a tester today so ill check it asap and report back

[NAUTIQUE-210]

nautique-210

i did replace all the plugs and fuel fillter but ill check them again tonight and report back thanks for the tips, i did take her out yesterday its idleing better but still very fuely and when at idel blows a bit of white steem more then before ???? power up top is fine lacking power down low

[DanielC]

When you replaced the fuel filter, was it still on the high pressure pump, inside the FCC, or did you not notice. If the filter was in place, I doubt any crud would get past it, and clog a fuel injector.

How many hours are on your boat? A few years ago, my GT-40 was starting to not run as smooth as it should, and I ended up replacing the plugs, it helped, but not completely. I then changed the plug wires, distributer cap, and the rotor. Then my boat ran good again.

Still would like to know the fuel pressure so that can be ruled out as a problem.

[shag]

Fuel pump corroded.

Just wanted to share an experience. early this year, I had to have a fuel pump (inside the FCC) replaced due to severe corrosion. The boat (05 SAN) had just ran out of warranty (about 10 hrs and a few months past) when I had the boat in and serviced. I had been noticing a fuel smell and also had occasional problems with and what I would describe as occasional fuel related hesitation on acceleration.
PCM agreed to warranty the pump (excellent warranty service) and seemed to come to a conclusion that ethanol in the fuel caused excessive moisture to collect in the FCC, causing the corrosion and problem I was having. Keep in mind that I used ethanol stabil and still had this problem.
I can't explain why some people have no problems whatsoever and others like myself have bad experiences with ethanol. I just can't seem to understand why we are making engines less efficient..... And gas costs are even higher now than before. I thought that was one of the reasons for going to ethanol-that it would be cheaper at the pump.
Take care and be safe!