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I have a GX620 Honda V twin in my golf cart that just started smoking intermittently.

Motor in my golf cart and runs great. 3 years old with oil and filter changed anually. Used on weekends to drive around the property. Started yesterday and it ran for about 20 minutes then suddenly started smoking thru exhaust very bad-looked like blue smoke. Turned motor off, let it cool for a few minutes, checked oil (it was fine and farily clear), restarted and no smoking for about another 5 to 10 minutes then it started again. This continued off/on for the next 30 minutes until I got back to the garage. When smoking, it still runs great but smokes alot. Any ideas???

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Bike smoking

You have oil getting past the valve guide seals.

Posted on Mar 30, 2009

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SOURCE: My 04 rmz250 is overheating. It started smoking 3

Several things here. Do an oil change, 10w40 motor oil. Run premium gas and install a new NGK spark plug one heat range colder than stock. It sounds like you have an air leak causing a lean fuel mix. Check the carb mount bolts and the intake manifold bolts for tightness. Also set the valve clearances with a cold engine > .002 intake and .003 exhaust. Check for any cylinder head leaks. This would show up as oil on the cooling fins at the base of the cylinder head. Tighten the head bolts if needed.

Posted on Apr 28, 2009

  • 29 Answers

SOURCE: oil is leaking into cylinder, and running out the exhaust

sounds like the power valve seal is leaking where it goes into the cylinder from the side case.

Posted on Jul 08, 2009

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SOURCE: pop noise with thick white smoke from front end,

sounds like you might have a cracked cylinder and oil puddled up inside over night and when you started it..it blew out through the exhaust. White smoke means oil...black smoke means gas ,and blue smoke means both..if you cracked a water jacket your oil will look like a bubbly milk shake.....take a look at your oil.

Posted on Sep 17, 2009

  • 1 Answer

SOURCE: Smoke alot

You jetting is off on your carb. Raise the clip on the needle in the carb, if it still does it.....the it will need smaller jets.....see a motorcycle shop.Your bike is a two stroke and will smoke with oil coming out the exhaust if card is too rich. What raio do you mix your gas/oil at? Disregard the first post....he must think its a four stroke engine.

Posted on Apr 01, 2010

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