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Old 06 August 2007, 14:41   #1
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Country: UK - England
Town: Southampton
Boat name: ting tong
Make: Ribtec
Length: 5m +
Engine: yamaha 115 4 stroke
Join Date: May 2007
Posts: 6
Yamaha 115 4 Stroke Idle Problem

Hi went out on friday and the engine stopped while in idle or neutral, this happened on my previous trip as well, can anyone help as i fill i don't want to chance it again as it is getting harder to start when it do stop.
When back on shore i flushed the engine with the muffs on and the engine idled ok also when running at speed on the water it seamed to run ok.
Can anyone help please.
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Old 07 August 2007, 11:45   #2
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Country: USA
Town: Oakland CA
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I doubt that flushing had anything to do with it.

Do you have a digital tachometer connected? If so, what's your idle set to? As I recall (and I won't swear to this), my F115 is set to idle at about 700rpm.

Check your fuel filters as well (or just change them out.)

Make sure when you pump the primer ball that it firms up and stays firm (if it doesn't you may have a leak somewhere.) If it goes flat while you're running the motor, you may a fuel line restriction.

Barring those problems, you may have a faulty low pressure fuel pump. I do not know how you'd diagnose that, but pumping the primer ball while running will be a good indicator of that problem (assuming it goes away while you're pressurizing the system by hand.)


Good luck;

jky
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Old 07 August 2007, 11:55   #3
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Country: UK - England
Town: southampton
Make: ribcraft
Length: 7m +
Engine: 230 diesel jet
Join Date: Dec 2006
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hi tony

with all that money you have been earning you should be able to aford the rates i charge

this should be an easy one to sort pop in and see me in the office will run you through it


bry
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