Top 20 V-Twin Horizontal OHV Engine with Electric Start - 610cc, GX Series Questions & Answers

Hi, if it's a newer style bike, it could be like a newer car. Not possible to change the timing.

You have a jet thats stopped up probably from ethanol gas sitting in it

How many miles are on it? It could be worn out rings, valve guides and seals, cylinder could be worn out of specs, etc.. Either way, too much oil is entering the combustion chamber.

What ussually causes white smoke to come out the exhaust is oil being sucked up in carb. Typical causes are too much oil in crank case or PVC valve. Or really bad piston rings

The voltage regulator may be bad, will need to unplug magneto and use multi meter and test magneto for voltage output on milliamp scale with the engine cranking, If voltage is present when cranking then the voltage regulator is bad , if no voltage then the pick-up coil and stator will need to be replaced. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/darryl_24e8d8d43e609e3c

Carb. problem. rebuild or buy a new one

Pull the spark plugs out and check their color - as this will tell you if the engine is flooding out or you have an ignition system failure. If they are black check to make sure the choke is opening up and staying open. If the ceramic is light and not brown then the ignition system is failing. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/darryl_24e8d8d43e609e3c

sticking valve cause that .

fuel pump not working or filter plugged

If it had set for a time, the jets may be obstructed. Have the carb rebuilt. Also make sure that there is fuel flow to the carb.

Check the flywheel keyway, they will shear and cause the problem you are encountering. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/darryl_24e8d8d43e609e3c

Need to know what problem?

what kind of fuel pump, what kind of fuel tank, is there a filter b4 or after the pump, is there even a fuel filter, is the tank empty? all questions you should ask yourself because any one of them can cause this problem.

It sounds to me like the carberator is a little dirty, drain the bowl and clean the main jet. Also while you are there check all the jets and make sure they are open not clogged.

Change the spark plug. Check the plug socket and look for rust or grime.

Simple questions first...clean gas?Good spark?Fuel feeding?

It goes to the motor and grounds the ignition that gives it power. looks like yours has just came loose for some reason.

tune up,fuel filter.

Is it backfiring. Thru the exhaust or the intake or the carbs

Bad coil or flywheel is very suspect probably leaning twords flywheel