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Someone help?


sunald

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Hi all, 

I have a 1991 Honda VFR750f and I'm having a problem with it. The overall bike is in great condition but recently my bike will lose power when its been on the road for about an hour and completely dies. The bike then doesn't want to start unless I let it cool down for a while. I was thinking it was either the thermostat on the bike or faulty spark plugs from possible too much carbon build up. The plugs are new from the beginning of 2016 When the bike starts to quit, I have gas and the temp gauge doesn't show that its super hot. Could anyone help me solve this problem?

thanks.

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Have you checked to make sure that the filler cap vent is not clogged? If you can run it again until it loses power, then open the filler cap and see if it runs better before it cools down.

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Check the vent in the gas cap may be partially blocked and not allowing for fuel flow ,also pull a plug and see if it is dark black or tan colour .

 

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Measure your stator output and the charge coming from the voltage regulator.

 

As the stator heats up, bad ones go belly up...

 

Search for "The Drill"  which explains it all

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Should be in the 3rd/4th gen section....a 91 is not that old.

 

But yes, starving for fuel or power (voltage) go down I would say to.

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