Outboard help
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Post Fiend
Joined: Sep 2006
Posts: 14,325
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From: Island Southeast Alaska
Outboard help
I got a 1990 Evinrude 50 hp. It has sat for several years. I cleaned the float bowls and new plugs. It will only run on both carbs when the choke is on. So I assume I still have one carb plugged. Or could I have rust under the flywheel causing this? What would you recomend to put in the gas tank to run through it to clean the carbs without hurting them. It has low hours on it since it was gone through. And ran fine 5 years ago when I last used it so I hope it is not to serious a problem. I used to use Carb Life but it is not available here anymore. Thanks
Post Fiend
Joined: Nov 2008
Posts: 23,849
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From: McKenzie River
Are you sure the needle valve is not stuck in the 2nd carb shutting off the fuel to it?......The "new and improved" fuels with alcohol in them tend to play havoc with the gaskets, o rings and seats in 2 stroke outboard carbs if not run dry after each use......Similar problem shut down my 35hp Evinrude and ruined a fishing trip, had to tear down the carb at home........Now I always run the "clear" non alcohol fuel in the boats
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
The float bowls are full. So I am sure it is plugged. I will haul it and thoroughly clean all the jets in the carbs this time. Good to know about the gas. Will I be okay if I run the carbs dry after every use. There ain't any choice on what gas we get here. And additives are few. Only about 6 weeks of boating weather left than she gets hauled for winter anyway. But there is a lot of crab and halibut out there right now. And the kids have the freezer full of Humpies (pinks) for bait.
Post Fiend
Joined: Nov 2008
Posts: 23,849
Likes: 20
From: McKenzie River
The needle valves on these carbs have rubber seats, the alcohol in the fuel makes them swell and stick in the orifice effectively shutting off the fuel, no matter what the float is doing.........give it a try if fuel has been sitting in the fuel bowls longer than 24hrs..........Yes, ALWAYS RUN 2 STROKES DRY OF FUEL IF NOT GOING TO BE RUN WITHIN A DAY OR 2!......unless you have access to old style clear fuel.
Post Fiend
Joined: Nov 2008
Posts: 23,849
Likes: 20
From: McKenzie River
Used to be the normal fuel, until EPA mandated the new alcohol laden "cleaner burning" gas............A few stations here in OR. sell it. mainly the ones close rivers and lakes, because it is popular with boaters, most marinas also sell it.
Lead Driver
Joined: Sep 2007
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From: Scio, OR
In some states Premium doesn't have ethenol in it. You'd have to check with your supplier though.
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
Okay I will ask Tony at Petro Marine next trip into town and see if it is available here. Thanks again. There is a lot of older outboards here so I would think there is something they are doing. I'll ask at the boat shop that want's to kit my carbs also. Said he can do it in two hours if I bring the boat in to him. Don't sound to bad but the rusty old trailer will never make the trip. Prolly borrow one tho. Folks are good about that up here. I'll take em off and clean em myself and see if they work first as it's a one and a half hour trip to town. But I can get to the city in 45 minutes by boat. Ahh!! the life of an Alaskan Islander. Damn it's friggn hot here. Time for a cool one.
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
I just found a place right here that sells regular for .39 cheaper than any where else. So I got to find a way to use it. Would a new kit have the right o-rings and seals. This out board has little hours on it and is like new. to good to scrap cuz of the damn type of gas.
Post Fiend
Joined: Nov 2008
Posts: 23,849
Likes: 20
From: McKenzie River
I just found a place right here that sells regular for .39 cheaper than any where else. So I got to find a way to use it. Would a new kit have the right o-rings and seals. This out board has little hours on it and is like new. to good to scrap cuz of the damn type of gas.
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
As Mine is sitting at the dock with both carbs full. I will haul it in the morning and pull the carbs. Shop said not to run it like it is or i may burn a piston. So Just to get it to the trailer I hope will be okay. I will call in the morning and see how far away the kits are. If they are close and I have the carbs off I can wait a few days. Maybe. But knowin me once I think I got them clean she will get wet again. He he
Lead Driver
Joined: Sep 2007
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From: Scio, OR
Tetraethyllead - Wikipedia, the free encyclopedia
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Post Fiend
Joined: Sep 2006
Posts: 14,325
Likes: 14
From: Island Southeast Alaska
Right on David. That sounds about right. Thanks. Now I am just waiting on the tide to haul the boat and clean the carbs out. Hope it works and I don't have to kit them. I can do that in a few weeks after the kids are in school and the weather turns.
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