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#1
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Spare saves runaway yamaha
SPARE can put some insight on what caused the out of control RPMs on the yamaha and what you did to stop it ...I have heard of this happening before,, im glad he was not in gear heading back to the dock when it happen
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#2
03-22-2011, 12:55 PM
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At the time he mentioned the only thing that he noticed was that a hose was hung up some how on the linkage (couldnt see what hose he was pointing to).....I would like to know how the ignition doesnt cut it off. In our conversation at the bar later we wondered what would have happened if Dave wasnt standing righ there... somebody mentioned (maybe Lee) about pulling the kill switch lanyard . Would be interested to know if that would have shut it down.
The only thing I could do at the time was stand there and look like this: 
__________________
1986 V-20 1986 Yamaha 150 HP
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#3
03-22-2011, 01:30 PM
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I thought you were in for a meltdown. Never seen that one before. Anxious moments. I bet you were about to drop a pantload right about then.
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#4
03-22-2011, 02:24 PM
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Quote:
"about to drop a pantload"...uh, in terms of what a rebuilt powerhead costs or fixin' to poop his britches?... 
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha 
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#5
03-22-2011, 04:07 PM
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Either One Fits.
Actually crap in pants Due to replacement powerhead. And to think the manufacturers really don't want the owners to exceed 1500 RPM in neutral due to the chance of chatter on the rod bearings without a load.
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#6
03-22-2011, 05:52 PM
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I've talked to several people about it. best idea we could come up with is once the engine was at a higher rpm( it ws at fast high idle) with no load, it started dieseling. Cutting the engine off(same as pulling the kill switch) would just short out the ignition, but at this point it was running with out spark, kinda like the top fuelers do when the ignition fails. the engine kept getting to higher rpm, i was fumbling with the throttle, couldn't figure anything out, so i grabbed the fuel line and kinked it closed. I kept fiddling with the linkages, trying to get the rpm down, when it finally started slowing down as it used up the fuel in the bowls. I really don't know exactly what stopped it, I was doing three or four things at one time when it started slowing down. i never seen one do it before.
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#7
03-22-2011, 06:07 PM
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could something happen with the fuel system from the long tow down.
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#8
03-22-2011, 06:22 PM
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I don't think that would have anything to do with it unless the tank vent was clogged. The only other thing that concerned me was afterwards, the primer bulb would not prime up hard with the engine off. It may have been drawing fuel thru the venst froma stuck needle or posible thru the fuel pump diaphrams
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#9
03-22-2011, 09:55 PM
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I had an old Kawasaki jet ski that would do that when being flushed on the trailer with no load. I had to cut the fuel to get the dang thing to quit. It would idle up pretty high and pretty much scare the crap out of anyone nearby.
__________________
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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#10
03-22-2011, 10:41 PM
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Quote:
As you had to kink the line to kill it, wonder if the line has now been compromised and needs to be replaced...
__________________
'74 V-20/ BF 150 '95 V-21/ BF 150 '84 V-20/ 200 2.4 Merc '87 V-20/'18 F150 Yamaha
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