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Old April 22nd, 2009, 03:04 PM
chromefish chromefish is offline
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Default Yamaha 2-stroke 9.9 dies on throttle....

Hi,

Have a 9.9 Yamaha 2-stroke, early 90's vintage....

As soon as I put it in gear and give it gas, it dies....

I did a carb clean by doing a dis-assembly and soak in carb cleaner... Also put in new needle and jet...

Reassemble and same thing...

I can keep it running by pumping fuel by hand on the fuel hose and feathering the choke...

I'm thinking fuel pump rebuild or Ignition module?

Any input appreciated!

M.
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  #2  
Old April 22nd, 2009, 04:13 PM
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cousinabe cousinabe is offline
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Location: Federal Hill - Baltimore City, MD
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Default Re: Yamaha 2-stroke 9.9 dies on throttle....

fuel restriction.

i think you're on the right path with the fuel pump.
def not ignition.
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Old April 22nd, 2009, 04:35 PM
chromefish chromefish is offline
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Default Re: Yamaha 2-stroke 9.9 dies on throttle....

Cousinabe,

Thanks for the input...

I ordered the parts to rebuild the fuel pump today...

New fuel line and tank may be shipping soon too... Small price to pay for piece of mind...

Thanks!

M.
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