batman
Serious Thumper
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SuzukiSavage.com Rocks!
Posts: 3806
osceola new york
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Riding with the choke on isn't a great idea , If your bike is backfiring when you close the throttle all the way, leaving the choke pulled out all the time will mean your bike is running rich any time your not at idle. This will allow your combustion chamber and sparkplug to be covered increasingly with soot., fouling the plug (can be cleaned) but could form glowing hot spot in the chamber which may cause detonation (very bad) or the unburned fuel could pass your rings washing oil from them and the cylinder walls causing premature wear. not to mention killing your mileage. The TEV valve on the right side of the carb ,under the small plate with three screws , there is a diaphragm and small spring under that cover . when the throttle is closed the vacuum downstream from it goes high and travels up a passage through a small hole in the "finger" off the diaphragm , defeats the spring pressure opening the valve ,sending extra fuel from the bowl ,down stream of the throttle plate to make the fuel mix richer and prevent misfire, backfire, or stalling . If the diaphragm has holes / cracks (other than the one in the finger) or the passage behind that normal hole is plugged , the valve won't open . You 'll need to clean the passage by spraying carb cleaner or inserting a fine small copper wire ,or both , to make sure it's open .You need to address the problem , not run with the choke on.
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