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#694468 - 07/18/11 09:27 PM Carb help on 175 Merc Sportjet
huntncoug Offline
Three Time Spawner

Registered: 05/22/07
Posts: 1616
Loc: Echo Lake
When I was pulling into the launch after fishing the Sky last weekend my boat died and wouldnt start. Opened the engine compartment and there was gas dripping down out of the carbs. When I got home I pulled off the carb cover and started it. It fired right up but almost instantly gas started spraying all over from the jet between the 2 barrels of my middle carb and it died again. I did some research and it sounds like my high speed jet is stuck open, any easy fixes or should I head to 3 Rivers.
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#694734 - 07/20/11 11:38 AM Re: Carb help on 175 Merc Sportjet [Re: ]
Chum Man Offline
River Nutrients

Registered: 11/07/99
Posts: 2689
Loc: Yelmish
one of those two almost certainly. you don't see as many sunk floats as you used to, the manufacturing has gotten better, but often plastic needles will swell up and jam, and metal ones can get corroded and stick.

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#694801 - 07/20/11 07:04 PM Re: Carb help on 175 Merc Sportjet [Re: Chum Man]
huntncoug Offline
Three Time Spawner

Registered: 05/22/07
Posts: 1616
Loc: Echo Lake
I took it to 3 rivers, they want to rebuild all 3 carbs to fix the stuck float on the one, 500 bucks! The boat is only 5 years old I really dont want to rebuild the carbs already!
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#694880 - 07/21/11 02:11 AM Re: Carb help on 175 Merc Sportjet [Re: huntncoug]
ColeyG Offline
Ranger Danger

Registered: 02/08/07
Posts: 3076
Loc: AK
The more I read about mercury engines, the less faith I have in them.

One of the boats I drive for work has a 200 sport jet in it. With less than 20 hours on the motor, it died in a pretty bad spot. Jump out of the boat and swim for your life kinda spot. Turns out it was a fuel pump, but still.

I would be curious to know what your problem winds up being.
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I am still not a cop.

EZ Thread Yarn Balls

"I don't care how you catch them, as long as you treat them well and with respect." Lani Waller in "A Steelheader's Way."

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#694881 - 07/21/11 02:55 AM Re: Carb help on 175 Merc Sportjet [Re: ColeyG]
Irie Offline
River Nutrients

Registered: 11/26/06
Posts: 4317
Loc: South Sound
As a Merc owner, I can say that they are the lowest POS garbage you can bolt onto a boat.

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#694909 - 07/21/11 10:13 AM Re: Carb help on 175 Merc Sportjet [Re: ]
The Catcherman Offline
Repeat Spawner

Registered: 06/24/99
Posts: 1201
Loc: Ellensburg, WA
I thought you liked E-Tecs?

Perspective is right. I have an old timer friend who swears by Sportjets over any outboards because of the design, reliability, fuel efficiency, and power.
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#694968 - 07/21/11 03:08 PM Re: Carb help on 175 Merc Sportjet [Re: ]
Jerry Garcia Offline



Registered: 10/13/00
Posts: 9013
Loc: everett
I would never restart an engine that had a leaky carb until I fixed the leak.
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would the boy you were be proud of the man you are

Growing old ain't for wimps
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