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Old 03-17-2009, 12:23 PM   #1
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Default 85 EZGO robin engine valve adjustments

After fighting with this 2 cycle I am begining to wonder if the valves are out of adjustment if that is possible or not. I can run the cart and watch the butterfly on the carburetor and see that it is closing all the way when I let off the gas but the cart still backfires if you start to ease into the throttle again. Could this be a valve problem and if so how do I adjust the valves. Thanks
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Old 03-17-2009, 01:34 PM   #2
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Default Re: 85 EZGO robin engine valve adjustments

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Originally Posted by riverview View Post
After fighting with this 2 cycle I am begining to wonder if the valves are out of adjustment if that is possible or not. I can run the cart and watch the butterfly on the carburetor and see that it is closing all the way when I let off the gas but the cart still backfires if you start to ease into the throttle again. Could this be a valve problem and if so how do I adjust the valves. Thanks
? if your engine is a 2 cycle, it does not have valves!
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Old 03-17-2009, 01:36 PM   #3
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Default Re: 85 EZGO robin engine valve adjustments

if you do have a 2 cycle? more then likely the carb needs to be cleaned.
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Old 03-17-2009, 01:36 PM   #4
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Default Re: 85 EZGO robin engine valve adjustments

Well first off, 2 stokes don't have valves so you will have a hard time adjusting them. Have you checked your compression with a gauge? You might also check your micro switch on your accelerator pedal. I had an issue on mine, the engine wouldn't run correctly and it ended up being the micro switch killing the ignition.
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Old 03-17-2009, 05:37 PM   #5
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Default Re: 85 EZGO robin engine valve adjustments

Hello riverview and Welcome to the forum.
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Old 03-17-2009, 07:12 PM   #6
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Default Re: 85 EZGO robin engine valve adjustments

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Originally Posted by ITA47 View Post
Well first off, 2 stokes don't have valves so you will have a hard time adjusting them. Have you checked your compression with a gauge? You might also check your micro switch on your accelerator pedal. I had an issue on mine, the engine wouldn't run correctly and it ended up being the micro switch killing the ignition.
Ditto.
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Old 06-27-2010, 10:56 AM   #7
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Default Re: 85 EZGO robin engine valve adjustments

Is the butterfly going back by itself or is the cable pulling it back? To correct my backfire problem I turned the key off and pushed the gas peddle to the floor. With the peddle to the floor I slid the stop and the spring tight against the butterfly. This will force the butterfly closed and stop dumping fuel into the exhaust. It worked for me (good luck).
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