Author Topic: 2012 UXV500i Intake valve fuel injected  (Read 704 times)

knukey

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2012 UXV500i Intake valve fuel injected
« on: May 16, 2023, 04:10:40 PM »
I have a no start on my UXV.  While checking we pulled the injector and turned it over.  The intake valve appears stuck open for some reason and blows fuel out during cycling.  Any ideas on what is wrong and a cost to fix?  I'm not mechanical, but my buddy that checked it is very qualified. Just wandering if I should sell it as is or pursue repair.

Thanks,
Kevin
« Last Edit: May 16, 2023, 04:21:26 PM by knukey »
2012 Kymco 500i SE

Ruffus

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Re: 2012 UXV500i Intake valve fuel injected
« Reply #1 on: May 16, 2023, 07:49:28 PM »
@knukey welcome here!
Are you sure about seeing your INtake valve staying open?

For this to be seen you need either your valve cover off or an endoscope to have a look inside your cylinder.

Pls take some pics and share to get to a solution.
Happy and safe scootering, Ruffus

knukey

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Re: 2012 UXV500i Intake valve fuel injected
« Reply #2 on: May 17, 2023, 12:53:00 PM »
Sorry, I didn't take pictures.  I've put it back together, but yes I had the valve cover off and adjusted the intake valve.  Once I turned it over taking out the injector, fuel blew out of the intake/injector hole. My fear is the intake valve is failed somehow.
2012 Kymco 500i SE

CROSSBOLT

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Re: 2012 UXV500i Intake valve fuel injected
« Reply #3 on: May 17, 2023, 03:28:17 PM »
Do a compression check.
Was the intake valve clearance excessive?
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

knukey

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Re: 2012 UXV500i Intake valve fuel injected
« Reply #4 on: May 17, 2023, 03:33:10 PM »
It seemed the intake valve was too tight.
2012 Kymco 500i SE

CROSSBOLT

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Re: 2012 UXV500i Intake valve fuel injected
« Reply #5 on: May 18, 2023, 12:22:21 PM »
It seemed the intake valve was too tight.
Then it is unlikely the stem is bent and more likely the valve was leaking back through to produce the symptoms you listed.
Karl

Three motorcycles 1960-1977 (restored a 1955 BSA)
Agility 50
Yager 200i
Downtown 300i
Navy tech, Ships Engineer, pilot and aircraft mechanic

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