Just got a dui distributor. |
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Jonny Quest ![]() Grand Poobah ![]() ![]() Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3024 |
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Might be time for a carb re-build. You should not have fuel dripping out anywhere.
JQ |
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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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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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So i got the dui all hooked up and timed, runs great
Got all the unnecessary computer and wire harnesses out. Runs great. but after i shut it down it looks like fuel is dripping from the boosters and causing it to flood? When its cold it fires right up. if i start it right away after running it it starts fine. but if i leave it sit for 20 min it floods and is really hard to start. |
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desertskier ![]() Platinum Member ![]() ![]() Joined: December-19-2006 Location: Az Status: Offline Points: 1118 |
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I couldn't find a harness schematic. The PCM Pro Boss GT-40 manual in the reference section has a lot of info in it that may or may not apply to your engine. I would look through it and see if you can identify some of the components/sensors. It looks like there may be a MAP sensor in your picture. Based on what you figure out you could clean up the harness. How did you wire your tach? As far as the choke goes I would wire it as TRbenj mentioned. Before the 12V gets to the key it comes from the 50Amp breaker point 22 on the engine then up to the dash and through the ignition breaker then to the key and back to points 28/41 and 31 so it is protected by two separate breakers. |
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TRBenj ![]() Grand Poobah ![]() ![]() Joined: June-29-2005 Location: NWCT Status: Offline Points: 21207 |
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I would not recommend protected side of that 2.5A breaker. That breaker was likely there to protect the (now defunct) Protec computer and/or small gauge wiring that fed it. The wiring in the harness can handle more current, and I would not intentionally limit what is supplied to the DUI. Connect to the unprotected side.
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Air206 ![]() Grand Poobah ![]() ![]() Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3004 |
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Yes.... but:
26 is the breaker protected side (out).... 41 is from the engine harness unprotected side (in). Use the breaker if you got it........... (plus, there physically should be more room on the 26 terminal, if it was like mine) Put a volt meter on it when the ignition is "ON" to verify. (ground out on nearby relay ground) |
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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It looks like on the diagram it is terminal 41, will either work?
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Air206 ![]() Grand Poobah ![]() ![]() Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3004 |
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Wait! ............don't mess with the harness.
The new DUI uses switched ignition - you can share that wire source. Also, you should still have your ProTec circuit breaker which is a switched ignition 12v+. That is near the carb and a freely accessible attachment point (no crazy splicing). Terminal 26 on the diagram below............. ![]() |
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phatsat67 ![]() Grand Poobah ![]() Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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The wire that comes out of the harness is usually red for the choke but if you cut the harness tape it's just spliced into the ignition feed wire in the harness before the ballast resistor. No biggie. Sometimes a bad choke pulling too much voltage can cause the feed to go down so just check the voltage to the ignition and choke when you get it running.
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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okay that is what ill do then.
Thanks alot!! |
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phatsat67 ![]() Grand Poobah ![]() Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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It needs to be connected to the purple ignition feed wire from the dash. A full 12v needs to be sent to the choke so whatever wire you're using to supply the DUI will be fine as long as running voltage is above 12v to both.
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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right now it is taped into a wire that runs into a computer that has all the extra TBI harnesses. im trying to take that out. so where would be a good place to connect it to?
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DrCC ![]() Grand Poobah ![]() ![]() Joined: April-12-2004 Location: at home Status: Offline Points: 2886 |
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Normally, it just taps into the ign fd wire in the harness next to the carb.
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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so it is wired in all the way under the dash? or at the solenoid?
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phatsat67 ![]() Grand Poobah ![]() Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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Very cool Steve !
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8122pbrainard ![]() Grand Poobah ![]() ![]() Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Cameron,
With a carb and standard ignition, the choke is wired into the switched ignition feed from the key switch. |
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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what is your electric choke wired to? ive seen some say alternator, some say temp sensor?
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Air206 ![]() Grand Poobah ![]() ![]() Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3004 |
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Definitely not worth the swap. It's all neatly soldered and bundled up now. Plus, I had several non-original senders wired into the Pro-Tec Circuit Breaker which is not accounted for in the new harness.... so I would still have a spliced harness.
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phatsat67 ![]() Grand Poobah ![]() Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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Not worth the swap out Steve?? I hear it's running nicely after WL
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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1994 hydrodyne.
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desertskier ![]() Platinum Member ![]() ![]() Joined: December-19-2006 Location: Az Status: Offline Points: 1118 |
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What year and model boat?
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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no is there a TBI schematic?
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desertskier ![]() Platinum Member ![]() ![]() Joined: December-19-2006 Location: Az Status: Offline Points: 1118 |
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Do you know which schematic matches your harness?
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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anyone know if i can cut and connect to make my own?
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Air206 ![]() Grand Poobah ![]() ![]() Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3004 |
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Looks similar, Mine was a 454, non-EFI - Check with Townsend at Nautiqueparts.com.
He'll hook you up (discount for being a member too)...... (You don't have to swap, though. It gives you a chance to "clean it up", and make sure you don't have resistance issues and voltage drop in an old harness. Mine was good, without voltage drops but I didn't have all that.) |
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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Air206 ![]() Grand Poobah ![]() ![]() Joined: September-28-2008 Location: Roanoke, VA Status: Offline Points: 3004 |
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I am liking Zach's idea of the harness swap......
N3 will have one that I JUST returned yesterday. |
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Hollywood ![]() Moderator Group ![]() ![]() Joined: February-04-2004 Location: Twin Lakes, WI Status: Offline Points: 13523 |
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Ah, this was a TBI to carb conversion as well, not just ignition. Yea, probably more wiring.
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camron18 ![]() Senior Member ![]() Joined: March-05-2015 Location: Michigan Status: Offline Points: 164 |
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I think i have alot more wires than just the ones in JPASS write up.
There are gadgets that are just laying on top of the manifold that have been there since we bought it, the previous owner said they were for the EFI but he converted it to carb, anyone know where i can find info on that? Also when i disconnected the coil pack the bracket with the starter solenoid and fuses also came disconnected along with another box of some sort. i don't know what that is also. You can kinda see a few of the plugs im talking about here. |
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desertskier ![]() Platinum Member ![]() ![]() Joined: December-19-2006 Location: Az Status: Offline Points: 1118 |
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The oil and temp switches and knock sensor are not used anymore. You can cut off all the old connectors just make sure any wires that are still hot get the ends covered in shrink tube, If you used JPASS'es write up then there won't be any hot wires left over. If you wanted to get creative the oil/temp switches are wired together and could be used to drive an alarm or dash lights (or shut down the motor) if a low oil or high temp condition occurs. They short to ground when a failure is detected so just use them as the low side of the circuit. |
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phatsat67 ![]() Grand Poobah ![]() Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
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120 bucks or so and you can buy a new harness that omits all the old protec stuff.
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