Ski NAUTIQUE 2001 overheat? Or??

Both anti siphon and gas vent hoses are clear and clean. Good shape and free flowing. I'm really thinking the issue lies withen the electrical issues and if not rebuilding the carb will likely be my last hope. I plan on taking this week to rewire the boat.

lakedog55 wrote: Fixing all the wiring problems should help it. If it doesn't check to see if the , but there is a over-flow or siphon on fuel tank. I have heard of them getting plugged and vapor locking Gas. Back of hull on either left or right. Silver looking thing.

Mike,
To clarify, there are two items that can get plugged back at the tank.

The first is the anti siphon. It looks like a fuel line fitting where the fuel line is connected to the top of the tank.

The second is the tank vent. It's a hose typically about an 1" that goes from the top of the tank to a thru hull fitting in the boat hull.

Sounds like some good progress. Like we all said before, with a boat that old you'll find multiple problems. Get everything addressed and you'll have one extremely reliable unit. I didn't like the look of the DUI because it's bulky but it's an excellent addition if you really want to go the EI route.

Like Paul said, make sure to test the voltage to the coil running and that will tell the tale if that's the issue.

I just completely re wired/re structured my 85 dash. Got rid of all the daisy chains in favor of some different style connections. If everything is in nice shape and the gauge is correct you should see 13-13.5 volts on the gauge running (actual alternator output)

Blake71121 wrote: Replaced the intake filter

Blake,
What intake filter? We have already mentioned questionable non marine parts the PO has installed. If you are talking about the thing that sits on top of the carb, it's not a filter nor is it replaced. The USCG flame arrestor is cleaned only. Please post some pictures before you drive a potential hazard.

A DUI is a big "chunk of jing" that you don't need to spend, you already have a brand new distributor!!

I'm going to bet your coil is getting to much voltage heating up then shutting down till it cools down.
Check these things and get back to us...
1) what is the OHM rating of the coil and is it a resisted coil or not.
2) Is the ballast resistor bypassed and/or what voltage do you have going from that to the coil.

My theory is the PO has bypassed the ballast resistor and has 12v going into a non-resisted coil causing the coil to overheat.

My buddies malibu does this. His has electronic ignition. Im subscribed to get any tips to help him fix it.

After it cuts out, you say you are able to turn it back on and rev it up correct? Have you tried to pop into gear and hit the gas hard (rather then putting it in gear and easing into the throttle) and if so will it the boat go?

The whole issue is quite possibly caused by bad wiring to/from the dash - if not the overall cause it is a confounding variable which will make other troubleshooting efforts unfruitful. Clean up your connections and check on the quality of all your wires and crimps.

Or the PO put in a car thermostat or just fitted the wrong one------

So it has points. I guarantee the only issue you may have with the points would be a condenser. You need to check the output of the ballast resistor as well. The older coils are of much higher quality than current production and seem to take a lot longer to show an over voltage situation than a current coil. I wouldn't put in electronic ignition if you don't have to. The dual point setup will support about twice as many engine Rpm than you'll ever turn that ford.

That dizzy is some sort of rare bird. If you really want electronic I would keep that cool dizzy and buy a DUI and call it a day. DUI eliminates the need for s coil killing two birds with one stone and getting rid of the ballast resistor. You'll need new plug wires too.

Points are literally one of the most reliable ignition systems available and with proper maintenance and operation basically last indefinitely.

Don't start just replacing parts (like the last guy). Listen to what all of these guys have to say (remmeber you're the new guy to cc) and you'll fix it soon enough.

Blake71121 wrote: electronic ignition is what I wanted on this boat regardless if that was the issue.

Blake,
I have to ask why? Are you expecting some type of gain?

Blake71121 wrote: Well I was completely wrong to trust the seller. Turns out the coil is not new it is the original coil with the motor. As for the electronic ignition turns out it is actually a Mallory distributor with dual points. I have decided to go the electronic ignition route and have ordered the ignition conversion and 40,000 volt coil to go with it setup for the Mallory distributor. Along with checking the fuel filters and pickup in the gas tank anything else that may cause these symptoms? Plan to change the water separator filter and thinking about rebuilding the carb although the boat runs great for the first half of the day. It is a Holley 8105B four barrel Does have the new OEM starter and Solenoid which was installed by a shop at the end of last season along with the Mallory Distributor $850 in receipts for all that.

I don't know of any Marine dizzy that has dual points and the carb number doesn't sound like a Marine unit either. Is the 8105B the list number on the carb?
I would verify those aspects and fix before going any further.

I don't believe that 8105B is a marine carb.

A whole bunch of new/random ignition parts sounds like a problem too. Please do post exactly what all is wired up and their part numbers.