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#1
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90 HP Yamaha - Ethanol Woes
What do I need to do? 4-stroke Late Model
Raycor Filter plus the factory filters were all muddled up. Fuel line is getting soft. My buddy may have put off the replacement of the fuel lines too long. Now it won't turn full RPM and the idle has gone south. If it was a Merc I would be pulling the injectors and sending them off. What do I need to do first? Besides replacing all the fuel lines and filters? 
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#2
10-01-2010, 10:04 AM
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Well, no replies must mean it ain't a common enough issue. Got the manual. Looks like the fuel delivery is similar to the Merc. Vapor cannister, multiple filters. I will dive in today.
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#3
10-04-2010, 07:20 AM
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Update- Confirmation on the bad fuel. Phase seperation. New filters (3) plugs (old plugs looked great), complete service, drained the fuel tank and in fact are replacing it entirely along with new fuel hose and primer ball. Burned the skimmins in the Snapper rider.
The VST on this Yamaha is buried behind the intake. Noone had the gasket or the filter for the VST. I suspect the injectors are full of crud but it may survive without taking it all apart. I mean that is a lot of filters. New tank, fresh fuel, ring free and stabilizer then a fuel pressure test.
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#4
10-04-2010, 08:57 AM
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"Burned the skimmins in the Snapper rider. "
I was read this like three times ,saying to myself..."what the F is a skimmins"....then I got it.
__________________
1986 V-20 1986 Yamaha 150 HP
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#5
10-04-2010, 09:02 AM
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Quote:
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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#6
10-04-2010, 10:10 AM
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Wilson, might should have said squeezins. LOL Boat & motor belong to a good friend. Trying to sort it out in time for the crappie bite. Seafoam is good stuff.
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#7
10-04-2010, 10:52 AM
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I've got two chainsaws and a blower down due to ethanol fuel. I run stabilizer, 89 or 93 octane in everything, and RUN everything regularly. I'm seriously thinking about buying gas from a bulk suppiler that is ethanol free.
__________________
1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20
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