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    9.9 Yamaha Water Blockage

    Model: FT9.9ELD My cooling issue investigation is unfolding as follows; No water was coming out the pee hose so I replaced the impeller (is was still in good shape) confirmed there was no blockage between the intake and the pump, the water tube was clear. There was a very small piece of hard...
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    Yamaha 9.9 broken water pump bolts

    Yamaha Model FT9.9ELD (1990) I am attempting to replace the water pump impeller and oil seals under the pump. This motor has not been serviced for a long time and the water pump assembly bolts were very seized from salt build up. I was able to work 2 of them out by a series on small movements...
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    9.9 yamaha case corrosion?

    I came across this thread while doing some research in order to help me make an educated decision on the course of action on my Yamaha 9.9 that has the same issues as described above. http://forums.iboats.com/yamaha-suzuki-outboards/9-9-yamaha-case-corrosion-468168.html I am tiring to decide...
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    Yamaha OX66 200hp Temp Gauge

    I have a OX66 200hp Yamaha. I have a basic Yamaha multi-function Tac that came stock with this motor. Just prior to re powering, I installed new Faria gauges in the boat. I hooked up the water pressure gauge and now want to use my temp gauge but can't seem to figure out where to attach the...
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    Water Pressure Gauge

    I have a Yamaha ox66 200hp outboard. I am installing a water pressure gauge but I cant find the spot on the motor to hook up to the block. I have a brass plug with a nipple (Yamaha stock part) but can't find where it should go? Any tips would be helpful.
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    Mercury control box

    Someone who has a merc 850 thunderbolt is interested in purchasing my mercury control box. My box is about 3 years old. Would it work on his older merc outboard ? Thanks for any info
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    Battery Draw

    On my boat to run my GPS system I have a netbook and a external monitor that are being powered at 110 volts by an inverter from my 12 volts batteries. The cord from the inverter to the external monitor converts the 110V AC back to 12v DC. Would it save battery life bypass the inverter, and...
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    Fuel Consumption

    I have a 1996 Yamaha 200hp OX66 with a 19p stainless prop on a 1989 21ft Bayliner Trophy. What is the most Fuel efficient RPM for running long distances? The price of fuel this season is making me think about this a bit. Thanks for any info.
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    Temp Sender

    On my 4.3L mercruiser (1994?) my temp gauge does not work correctly. The gauge does not move even when it the motor is up to operating temperature. When I ground the wire off the sender the gauge needle moves to full hot suggesting the gauge is ok. I am going to remove the sender and check...
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    Mercruiser Shifting Issue

    I have just replaced a 4.3L mercruiser and re installed the alpha one leg. (Bayliner, 4.3L Motor and drive are from 94) In the driveway it shifts forward to reverse very smooth. Idles around 650rpm. But in the lake while docking it required excessive force to shift between forward and...
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    Merc Trim Pump Questions

    While repairing a boat I purchased I noticed the trim fluid was a bit milky in the reservoir. (Mercruiser) I tried running the trim down then up. It stopped mid travel on the way up. Now the solenoids clicks in both direction but that's all. The pump is not engaging. Where should I start...
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    Power trim question

    Getting ready for start up after a mercruiser re install and I have noticed that the power trim resevoir on the pump is empty. (I have not removed any lines) I will top it up before trying it out but will it require bleeding ?. Thanks for the input, I am in uncharted waters.
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    Power Steering Question

    I have just re installed my mercruiser and have just re connected the power steering lines. Do I need to bleed it some how or will topping up the reservoir on the pump after running it do the job ? Thanks for any input
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    Electric fuel pump

    I installed an electric fuel pump on my 94 4.3L Mercruiser. I installed a oil pressure switch on the power feed to the pump. Do I need to run parallel wires to the dash to a spring loaded switch to prime the motor before oil pressure occurs or can I use the choke wire somehow. Or is this...
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    Mercruiser Wiring

    After re installing the wiring harness on my 4.3L mercruiser I have 2 wires left over that don't seem to be on the wiring diagram I have. They come from 2 different spots on the harness but they are both tan with a blue stripe. Could they be for some type of alarm? (1994 Model)
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    Electric Choke Question

    The small metal tab that you push the female electrical connection on to The electric choke on my 4.3L Mercrusier broke off. I soldered it back on. There is no resistance between the tab I soldered back together and the spring coil inside the choke. Once the choke is re-installed there is no...
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    Harmonic Balancer Compatibility

    I am building up a 4.3L for my boat. The pulley for my V belt wont fit the harmonic balancer on the replacement short block. The replacement short block had a serpentine belt and the harmonic balancer has an offset. Can I use my harmonic blanacer off my original 4.3L . The blocks are of...
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    Compatability

    When replacing a cracked 4.3L mercruiser block (gm casting 867) that was produce late 80's early 90's, can I use a newer 4.3L Vortec short block ? Will my heads (768) and intake fit the newer block? Will my flywheel bolts on ? Does it make a difference that the newer block is set up with a...
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    4.3L Broken Crank Questions

    I have a 4.3L Mercruiser with a cracked block (Not winterized correctly by the previous owner). I purchased a 4.3L motor with only 150 hours on it with a broken crank. I inspected it upon purchase. The only damage appeared to be to the crank and 1 piston. The block had no marks or...
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    Cracked Block

    I have a 4.3L mercruser that has a cracked block. Can I use a 4.3L block from an automotive application if I change the core plugs and swap everything over? I have new manifolds as well.? Thanks for any info.
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