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  1. Won't Start, Kills All Power Temporarily - 00 Launch

    I started to winterize my 2000 Launch (Indmar MPEFI 5.7) today. Got to the point where I start the motor on the garden hose to run Sta-bil through the motor, and it won't turn over.

    Here's what...
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    Since this thread has been reborn, I'd love some...

    Since this thread has been reborn, I'd love some insight on replacing the exhaust hoses. I noticed a leak on one of mine, so it's on my list of winter projects. My boat has fiberglass mufflers too,...
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    I think you are overthinking this. The analog...

    I think you are overthinking this. The analog signal wires for the tach (grey), oil pressure (light blue), and temp (tan) senders are in the motor harness. The fuel gauge is a pink wire that comes...
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    That website doesn't exist. If you're talking...

    That website doesn't exist. If you're talking about this, very overpriced IMO. I paid $180 for a set of higher quality Faria gauges. Looks like they're making their money on the wiring harness,...
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    My first suspects would be the main battery...

    My first suspects would be the main battery cables, or a connection in them. Odds are the circuit breaker is just doing its job, IMO.

    You need to get this fixed ASAP. You'll fry your alternator...
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    https://www.mastercraft.com/teamtalk/showthread.ph...

    https://www.mastercraft.com/teamtalk/showthread.php?t=61353
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    People should really consider ditching the MDC...

    People should really consider ditching the MDC and switching to analog gauges. It's not that hard to do, and will teach you a lot about your boat if you haven't done this kind of thing. Whoever...
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    Fuel Line Size?

    Anyone know the size / inner diameter of the fuel lines in a 2000 Launch with Indmar Assault MPEFI? It looks like the pressure & return are the same size. They're about 3/4" OD. Thanks for any...
  9. The dealer-installed options on my 2000 Launch...

    The dealer-installed options on my 2000 Launch used a few Scotchloks.

    It could be anything, but purple is typically used for the starter signal wire. Where does it go in the harness?
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    2000 Launch Dash Panels / Bezels

    I had new dash panels made for my 2000 Launch while deleting the MDC and replacing all the gauges and switches. The originals were cracked and hacked to the point of uselessness. The material size...
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    I recently replaced all the gauges in my 00...

    I recently replaced all the gauges in my 00 Launch. It's not hard if you have some experience with wiring.

    https://forum.supraboats.com/showthread.php?19457-2000-Launch-Dash-Rebuild
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    Thanks. I'm still considering building a larger...

    Thanks. I'm still considering building a larger square base for the driver seat, too. It would really reduce the stress on the floor, stabilize the seat, and it'd be nice to not have to sit on my...
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    Thank you! So there are four stringers? Do you...

    Thank you! So there are four stringers? Do you know the widths of the stringers and the gaps between them?
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    00 Launch - Floor Under Driver Seat

    I was sitting in the back while a friend of mine that's fairly big drove yesterday, and noticed more springiness in the the seat than I have seen before. Looking closely, the floor is actually the...
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    Hook up a fuel pressure gauge to the schrader on...

    Hook up a fuel pressure gauge to the schrader on the rail, and watch the pressure while you drive. Should be around 48 psi pretty much all the time.

    The problem with the gauges is almost...
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    The pickup and return used the same aluminum 1/4"...

    The pickup and return used the same aluminum 1/4" NPT x 3/8" barb fitting, so I went ahead and changed the one that hadn't failed yet. The ones West Marine has are brass. Here are the old ones. ...
  17. You need the choke connector hooked up to the...

    You need the choke connector hooked up to the wire that goes hot (12V+) upon ignition on.
  18. Shift cable adjustment would be my guess on the...

    Shift cable adjustment would be my guess on the transmission issue. There should be no force on the cable when it's in neutral.

    The choke should have marks on the plastic housing to get you in...
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    Fixed! There was a fitting on the fuel pickup at...

    Fixed! There was a fitting on the fuel pickup at the tank that was corroded and broken completely loose. Picked up a new one at West Marine for $3.99. I guess the fuel pumps can generate 10 psi of...
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    Sent. If anyone is interested in the 2 spare...

    Sent.

    If anyone is interested in the 2 spare sets I had cut, $80 shipped for Supra forum members. I'll be putting them on ebay for $100 soon.
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    Thanks a bunch for the help here and on my dash...

    Thanks a bunch for the help here and on my dash rebuild thread!
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    Well, I opened the canister up last night, and I...

    Well, I opened the canister up last night, and I am 90% sure the high pressure pump is running. I'm thinking I may have a clogged pickup, or swollen fuel line from ethanol. I think I'm going to...
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    Fuel Pump - 2000 Launch

    I have a 2000 Launch with the Assault MPEFI engine. Fuel pressure is 10 psi. This motor has 2 fuel pumps and 2 filters. I've changed the filters with no improvement. I believe the problem is the...
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    Thanks. The plastics supplier that cut the...

    Thanks. The plastics supplier that cut the panels engraved the labels in the material. I wasn't sure how the engraving would come out, so I only had one set engraved. It came out better than I...
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    Finally done. The bezel panels I had made were a...

    Finally done. The bezel panels I had made were a little off in a couple spots, but not enough to not work. I replaced all the switches and circuit breakers, and replaced the original trim tab...
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