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94 Sport fuel issues |
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Sport1994 
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Joined: July-03-2017 Location: Springfeld, Tn. Status: Offline Points: 8 |
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 Topic: 94 Sport fuel issuesPosted: July-03-2017 at 2:16pm |
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Hey everyone, new member and long time follower here just bought my 94 Sport a few weeks ago. I know as I have read many posts here that a lot have fuel/stalling issues. Mine has been that first off bought BAD gas. Rebuilt carb with knowledgeable help, drained gas tank, changed fuel/water separator. Starts and runs good until warm then doesn't want to idle/dies. Restart with pump of throttle but boggs going into forward. Ignition has been changed over to Electronic Mallory Distributor. Reason I way this is looking to further diagnosis issue have found that when distributor changed over with Fire coil resistor was not taken out of loop? What do you guys think? breakdown of Resistor when engine is warm? Not going to give up! Correct Craft for lIFE!
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3009 |
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Posted: July-03-2017 at 2:23pm |
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If it starts and runs fine until warm, you may have an improperly adjusted choke. You can check by looking down the carb and see if the choke is engaged.
Some have advocated deactivating the choke all together and simply going with a few pumps of the throttle to engage the accelerator pump before starting cold. JQ |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Sport1994
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Joined: July-03-2017 Location: Springfeld, Tn. Status: Offline Points: 8 |
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Posted: July-03-2017 at 2:35pm |
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I have checked choke operation and I seems to work great! 6 hour carb rebuild with no port cleaned out and surfaces cleaned. All new gaskets and insides. I had same issue before carb rebuild and can not seem to be able to get it out? LOL ran flawlessly when I water tested before I bought it. Isn't that the way it goes?
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Sport1994
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Joined: July-03-2017 Location: Springfeld, Tn. Status: Offline Points: 8 |
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Posted: July-03-2017 at 2:38pm |
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Should add my cousin who helped me rebuild along with lots of carb cleaner and wire went through all the setup fuel/throttle linkage to make sure nothing was out of sync.
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3009 |
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Posted: July-03-2017 at 7:06pm |
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What is your timing set to at idle?
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3009 |
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Posted: July-03-2017 at 7:07pm |
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Your coil may need to have a ballast resistor in-line. If you don't, then your coil can heat up and then stop functioning.
When it starts to stall, turn engine off and pull off the flame arrestor and look down the carb throat and then give the throttle a couple of full pumps. Look for a steady stream of fuel coming from the accelerator pump nozzle. If you don't see fuel, then you may have a mis-adjusted float in the float bowls. Also, you could have an obstruction in the fuel line (tank vent or anti-siphon valve). Do you have a fuel/water separator? You may want to look there and see if there is water in the canister. What happens if you go to full throttle on a "cold" engine? Does it run normally? |
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Sport1994
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Joined: July-03-2017 Location: Springfeld, Tn. Status: Offline Points: 8 |
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Posted: July-03-2017 at 7:17pm |
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I haven't checked timing yet and I have the Flame Thrower coil. I was looking online and everywhere I found it is not suppose to have one. mine does so I am going to pull it out of the system and see what happens. 4th of July weekend storms here not helping either. also found a discussion about a strainer in the inlet side of the fuel pump? Guy I bought from had put ethanol in it on the way for me to test drive he told me later.
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Sport1994
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Joined: July-03-2017 Location: Springfeld, Tn. Status: Offline Points: 8 |
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Posted: July-03-2017 at 7:24pm |
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The boat when cold runs flawlessly. We have rebuilt the carb and the accelerator pump is working well. I used a pump and drained the tank as the first time we went out I got bad gas and helped a lady yesterday load her's as she had bought gas their too that morning. My separator is the spin on type, don't like, so you can't see anything there. I have some fuel rated plumbers tape coming and I will check the anti siphon at the fuel pump when I get the tape.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: July-03-2017 at 7:38pm |
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Chris,
Coils typically break down from heat caused by too high of a voltage but you say the ballast resistor is in line still. Are you sure it hasn't been by passed when the EI conversion went in the distributor? Get the VOM out and check the actual volts going to the coil. Why the Flame thrower coil? Did the PO install it along with the EI conversion and do you know why? Bad gas? Ethanol? Some state they have had problems with it but I have NEVER had a problem. I've been running it in all my boats ever since it came out!! I even lay them up over winter with ethanol and have NEVER had a problem!! |
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Jonny Quest
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Posted: July-03-2017 at 8:12pm |
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ETHANOL
The problem is that alcohol (ethanol) is hygroscopic -- meaning that it attracts and holds water. Alcohol can even pull water / humidity out of the air! Water is heavier than fuel, so it falls to the bottom of its containment. The water can then begin the oxidation / rust process. Boats are water machines, so the likelihood of water contamination in the fuel is higher than, say, a car. Combine this with ethanol fuels, and you can introduce problems into the fuel system. Additionally, alcohol / ethanol is mildly corrosive to rubber, plastics and even some metals. As such, any mechanical device that was designed for non-ethanol fuels may be susceptible to fuel related problems when using ethanol. I acknowledge that many have run ethanol fuels with no apparent issues, but not all ethanol related problems show up immediately. Just saying... |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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8122pbrainard
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Posted: July-03-2017 at 9:16pm |
I know perfectly well the issues of ethanol and the short as well as long term effects it reportedly can have. I'd have to say that after the roughly 15 years of using it, those effects should have shown up. There are way too many back yard hacks out there that will blame problems they don't know how to and can't fix on "bad" gas and ethanol!! 
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11196 |
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Posted: July-03-2017 at 9:34pm |
Now that right there is classic,vintage Petespeak  You may think it kinda odd that I agree completely with your statement Pete, but I do. |
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: July-03-2017 at 10:18pm |
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Like Pete says. Here in Illinois we have had it for a long time.Only item to give me trouble ever was my Stihl weed whip. 1940's and 50's tractors I don't even drain or run dry. Wish we could get pure gas don't like leaving gas in the gt40. I wonder with all the formulations there are maybe Illinois's blend is not as corrosive because I have heard of some real nasty things happening.
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SNobsessed
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Posted: July-03-2017 at 10:20pm |
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I helped a friend with his jet ski, had several years old gas, it had turned into green goo, probably due to the brass fittings.
Ethanol needs to be burnt within a few weeks of purchase, IMO. |
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
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KENO
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Posted: July-03-2017 at 10:28pm |
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Probably depends what percentage of ethanol we're talking about.
I'm used to 10% ethanol in the gas. Several year old gas of any kind is gonna have some nasty effects. That goes right along with Pete's statement, blame the problems on the gas not the fact that it sat there for several years This is like an oil or points vs electronic ignition or Ginger or Mary Ann discussion, plenty of thoughts and no agreement
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: July-03-2017 at 10:30pm |
Chris, I'd have to say your friend didn't use anything to stabilize the fuel. As I mentioned, I do lay up over winter with the ethanol but I do stabilize the fuel. Also, the stabilizing only lasts for 6 months. Good thing your friend had some help from yourself! 
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3009 |
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Posted: July-04-2017 at 3:28am |
Yup. Ask 5 people and get 7 opinions. As I have occasionally told Mrs. Quest: "I'm not looking to persuade you, nor to be dissuaded by you." |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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Sport1994
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Posted: July-04-2017 at 7:37pm |
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I checked with meter and had 7.8 volts going to coil with external resistor. rewired and was able to bring up to 11.8 volts. why they put on this coil I don't know but it is rated for the distributor. also tore into strut and found it was out of alignment so got it back with a washer under each rear thru bolt and turns with 2 fingers! I have been concentrating around everything to do with low idle issue. as we all know these boats are designed that every be on the money to operate correctly.
Everyone I really appreciate your help and LOVE reading the forum. So to put in order. went to buy and water tested and ran fine though ran it for about 30 minutes. brought home and next weekend stopped and filled with BAD/water in fuel so that didn't help matters. came home and took carb off and with help rebuilt and found a lot of leakage around gaskets and intake. fixed all and went to lake to do final setup. still after getting warm had issues wanting to stall in gear low throttle but able to make adjustments and bring most out. neighbor had electric pump so pumped old fuel out of tank and filled up with 93 non ethanol. went to lake and ran good til warm and started dieing in low idle gear. above 1500 rpm this thing is a beast. after working on today in garage due rain here in TN I am ready to test next Saturday. |
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Sport1994
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Posted: August-19-2018 at 12:27pm |
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well everyone i think i have finally worked the bugs out on my 94 Sport lol? after the fuel issue and rebuilding the carb i went on to replace the electronic distrubutor board, correct coil and resistor. thanks to richard at ski dim providing a wiring diagram i was able to fix the burnt board issue. then came winter and this year started having issues again. bog at takeoff and when heated up wanted to die. found the start of milky oil and knew at this point had a bigger issue. so pulled heads and they were good along with gaskets. pulled intake and turned over and found crack on bottom side where thermostat housing bolts on. also found ALOT of rust inside intake? thinking maybe water may have been getting into fuel side of intake too. so ordered new intake, edelbrock aluminum and had heads gone through while off. reassembled along with new carb and this thing runs like when new! i want to thank everyone that has put there info on this forum as i have learned a valuble lesson. NEVER ASSUME anything when you buy a used Nautique! there are those of us on here that love our boats and there are those out there that only want to band aid and flip them. Thanks to everyone here once again and if anyone is around Nashville Tn. give me a shout as my wife and i hope to spend our weekends on Center Hill and grow our CC group of friends.
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Jonny Quest wrote: