2002 ski nautique |
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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And yes, im going to put a main power cut off severe in the boat, not sure where yet, but definitely out of sight... not sure why it won't hold a code, I was just happy I didn't have to buy another outrageously priced box! Thanks everyone for yalls help, it makes this so much easier!
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ultrarunner
Platinum Member Joined: October-02-2005 Location: Ridgefield, Ct. Status: Offline Points: 1846 |
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1. Put the can of starting fluid down! 2. As soon as you put power to the keypad, you should hear the relay activate the fuel pump. If you don’t hear it, it’s a bad relay. NAPA usually has them. It’s a quick change. Get a couple extra and keep on the boat. Those relays are a high failure item. Those relays are located on the back of the motor next the ECU. Here are your two relays. I'd change them both just because of age and sitting so long. |
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Ok, I will get them, and give it a shot, im pretty sure I hear the fuel pump kicking on right before I try to start it everytime though? Or is that not what I'm hearing?
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Skier4life04@gmail.c
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Yes, they are clicking and the fuel pump is kicking on... any other suggestions?
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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https://linksharing.samsungcloud.com/vQNq5F0fjvwE
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ultrarunner
Platinum Member Joined: October-02-2005 Location: Ridgefield, Ct. Status: Offline Points: 1846 |
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Hmmmm...I didn't go back through the entire thread, but has the boat been running since you got it?
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Don't just put it down, please dispose of it. The stuff is a great way to ruin an engine. Why do you even have it?
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Lawnmower on its last leg, thats what the starting fluid is for. The boat had been sitting for about 7 years.
I siphoned all the gas out and put 15 gallons of 100% gas in it. Changed the oil and filter Cleaned the cap, rotor, and plugs Drained the full element And checked the relays and kill switch And I am getting spark at the plug |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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There are 2 fuel pumps that have to run -the low pressure one which is basically a fuel transfer pump and the main high pressure pump. Here is a way to manually energize them, a fuel pressure gauge from somewhere like harbor freight would be helpful as well.
Grand Poobah The STO is hangs on the rear of the motor by the circuit breakers. You need to make a jumper that will fit in the STO (with an inline fuse preferred) and an alligator clip or something similar. Plug into the STO then connect to a good ground source, this will run both pumps full time taking all other sensors out of the loop. So if both pumps run and the motor starts the problem is in the pump circuit somewhere. If it does not start but has fuel pressure then we need to look at the ignition side of the puzzle. |
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Pumps were running, still wouldn't fire though. The spark did not look very strong when I checked it. Is it likely that the spark is not strong enough to ignite fuel but is enough to ignite the starting fluid?
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11116 |
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The pumps were running, but were they pumping fuel and making pressure behind those injectors? I'd check the pressure with a gauge like mentioned above, looking for 39 + or - 3 psi while cranking.
And maybe check that the injectors are firing too. You're just playing "human injector" when spraying the starting fluid. That get kinda tiring and besides Pete might have a stroke if you spray any more starting fluid If it runs on that, it should run on gas.
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Ok, I will get a tester today. Does anyone have the part numbers for car, rotor, wires, and plugs for 2002 ski with 5.8 GT40?
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11116 |
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Here are some numbers that can be cross referenced to different brands Cap Motorcraft DH411B, you fill the vent hole with silicone to be like the original "marine" cap Rotor Motorcraft DR374B Plugs Autolite 764 or Autolite 104. The 104 is a full threaded version of the 764 which is supposedly discontinued, but can still be found. They both work equally well Plug wires from SkiDim RK120015A or people have made their own from universal kits. SkiDim also sells a cap and rotor kit RP173082
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Ok, so I have replaced cap and rotor, and plugs. Im getting 39-40 PSI from Schrader valve, getting spark, and still this thing won't fire. Not really sure what else to check. I pulled the HP pump filter off and there was only a little gas in the bottom of it, so I cleaned it out and filled it with gas, then put it back on, thats when I got 40 psi... you think the LP pump is bad even though I can feel it running? That is what fills the HP correct? Even if it was bad, shouldn't the motor have at least fired until the HP ran out of fuel?
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Ok, so while I was waiting for some direction on here, I took the injectors out and cleaned them and it runs now... thank you everyone for all your help... I hope this thread helps others.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11116 |
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Hey, why don't you take the injectors out and clean them and see if it starts
Somebody has to say good job, so I will. If you had 40 psi and no gas getting to the engine, it makes sense that they were plugged, it also says that both pumps are good.
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Thanks for all your help, I would have spent a fortune at a shop!
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Quick question, can I use the Napa fuel pump thats like 60 bucks or do I have to buy the 260 dollar one from nautique? There is a Carter fuel pump on Amazon that looks familiar for like 56, just want to know if anyone has tried it for the low side pump.
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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The part number for the Carter pump is P4594.
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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P 4389 might be a better choice but it has no plug, I’ll have to look but somewhere I have the plugs part number as well. I have one on a gt40 but it has not been run yet
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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I can just wire my old plug to the new pump, cant i?
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Skier4life04@gmail.c
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I? Old one is working, for some reason it's not pulling gas from the tank, but when I kick it on with the hose unhooked I can feel it sucking.
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Skier4life04@gmail.c
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Do the pumps need to be full of gas for it to pull from tank?
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Well you could or you could just hard wire it-thats what my dealer did on my 95. Let me find the number on the plug you can probably order one when you order the pump. That way it would look factory if you want.
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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If you want the oem plug your looking for Deutsch DT04-2P usually comes with the other end as well DT06-2P like this on ebay- 263238868932
or amazon- https://www.amazon.com/uxcell-Deutsch-DT04-2P-Electric-Connector/dp/B00WW55ECA
Here is my setup with the 4389- |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Since yours was sitting for awhile and the injectors clogged you could try taking it apart and see if you can fix it not really complicated,those little vanes get stuck in their grooves,here is the service bulletin-
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11116 |
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I'm a little groggy this morning, so I'm a little confused too The quote above makes it sound like you found the problem and it's the end of the thread If you cleaned the injectors and the engine runs like you said above and it has roughly 40 psi fuel pressure, why are you thinking the LP pump needs replacing. The only way to get 40 psi is with both pumps running. There must be more to the story. If the pump runs and it isn't sucking from the tank, maybe you should start with checking the anti siphon valve( and the hose/strainer in the tank) to make sure it works and lets gas through it when the pump is sucking.
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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I thought it was over too, but apparently when I pulled the HP canister off, cleaned it, and filled cannister with gas it ran... until that HP canister ran out of fuel. I can see 3 lines and an electric part going in to the top of the tank through the trunk. Cant figure out how to pull them out of the tank though? This boat is becoming a big headache.
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KENO
Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11116 |
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Electric part would be the fuel level sending unit and you'd have a suction line, return line from the fuel pressure regulator and a bigger vent/ overflow line.
As a test I'd probably disconnect the suction from the LP fuel pump and hook up a clear line going to a small temporary tank and see if the pump sucks gas into it and the boat will run and start like that. A portable gas can with a hose stuck in it, or an outboard motor fuel tank would be good. Make sure it's vented so the pump doesn't draw a vacuum in the tank. If the pump is sucking, you'll see the fuel flowing and fuel pressure will be normal since it takes 2 pumps working together to get that 40 ish psi That'll help you decide if it's a pump problem or a fuel hose/tank issue.
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Skier4life04@gmail.c
Groupie Joined: March-28-2021 Location: TN Status: Offline Points: 61 |
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Both pumps are working, I ran the boat from a 5 gallon tank, it continued running 15 minutes after the tank was empty. After the tank emptied I hooked up the main fuel supply line while the boat was still running and it ran out of gas. Also my gas Guage is stuck on "E", even though there is at least 15 gallons in it. Could that affect anything? Should I start a new thread? Or just continue on this one? There is a ton of information here.
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