Runaway motoR

[Clivingston]

was causes this? I do have premix in motor as this was recommended during break in. Now soon as it starts it runs off. Ideas?

 

[jhjesse]

You have an air leak some where. Get a mirror and check the carb base gaskets. One of the gaskets more than likely slipped when you installed the carbs.

 

[Clivingston]

I will def check that. Anything else that could be?


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[Dr Honda]

Air leak... or the throttles are set too high.


Use the choke to kill it if needed.

 

[Clivingston]

Where would air be leaking from besides the carbs?


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[XP 787]

Mine ranaway from me once. I changed carb base gaskets, rotary valve cover gasket (big o-ring), exhaust gaskets(because of a water leak),water separator filter and o-ring and haven't had a problem since. When I replaced the rotary valve o-ring there was a small nick in it.

 

[Clivingston]

Ok think I have a few extra gaskets will try that


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[Clivingston]

Would the motor being under no load cause this also. My impeller and Drive shaft are stripped??

 

[XP 787]

I don't think so. When out of water there is barely any load on it. Check for air leak. Does it runaway all the time out of the water? If not then you can start it then spray carb cleaner at carb base gaskets and see if engine reacts with higher rpm. Do this on a cold motor.

 

[Dr Honda]

Would the motor being under no load cause this also. My impeller and Drive shaft are stripped??

That won't cause the issue... but you won't ever get a runaway while loaded. (so it's not an issue in the water)

 

[Clivingston]

Ok so the stripped impeller is why it ran off in the water which told me I have another problem. So if it won't do it under load how big of a problem is it to fix? Is this something I can live with or needs to be repaired? Talking about the leak. Pretty obvious that I will have to fix the driveline.


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[XP 787]

Engine will run lean and blow.

 

[Clivingston]

Oh that's all?! [emoji12] will fix that too I guess. Thanks for they help guys. Informative as always!


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[Dr Honda]

Engine will run lean and blow.

Yep...


What I was trying to say is... it's not "Un-safe" to the passengers... but the issue needs fixed. Running lean is death to a 2-stroke.