My scooter has no spark how to fix. gy6 chinese scooter 139qmb qmb139 50cc 150cc

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[chadsimmons]

" HEY ROLLING WRENCH " if we have to replace all the engine parts every time it wont start " THEN " why buy one in the first place ? Unless your saying that its still a cheap trouble-shooting system compared to the mechanic shop repair cost ? Glad that you share your expertise with people of little know-how ! THANKS-4-GOOD-VIDEO

[RollingWrench]

I'm glad you mentioned this. It is rare to see scooters with a kick stand switch. But that will throw you for a loop of you dont know about it.

[jeremybrown]

Of all the scooter help on here i find yours the easiest to follow and understand im dealing with the no spark issue now this video was tremendous help

[RollingWrench]

if nether the coil or the cdi box are not the problem its probably the stator. But your very first checks should be making sure all of your wires on your plugs are perfect and not coming loose. One more think disconnect the right side control switch. Use the kick starter to see if you have spark. If you do spark after unplugging the right side switch, you have a bad kill switch (or you can do a continuity test). Be sure that you do not a kickstand switch, if you do be sure its up when starting.

[joshuaprice]

Hey brother thank u so much for this video I've spent 10 days running wires and going over my hole bike an 86 honda spree trying to figure out why I didn't have spark and I had watch a hole bunch of videos that just didn't help me at all and I watch your two and a half min video that u put on and it got me the info I needed and it was so easy to follow thank u and if u got any advice for this bike I got please do tell thanks again u the man

[RollingWrench]

Charlie,

You replaced most of the ignition system. I would check to be sure the kill switch is working on the scooter. unplug the right hand switch and kick the kick start to see if you are getting spark. Also check the continuity on the blue wire with the white strip. Be sure this wire is not broken. This wire tells the engine when to start. Be sure the two stator wires are plugged in correctly, you may have switch them on accident. Try one more cdi, we have had faulty brand new cdi's.

[RollingWrench]

Charles,

We sale a kit for $150. This kit includes everything to fix a spark issue. It comes with all parts and the puller to remove the stator rotor. To test the starter remove it from the scooter, and bench test it. Its pretty rare for starters to go bad. Most likly if your pushing the start button and not getting any action it is going to be the starter solenoid.

[RollingWrench]

I think your on the right track. There is a/c and d/c cdi box's. You may have purchased the opposite of what you had.

[RollingWrench]

Charles,
No this will not effect the ignition spark at all. I think your testing the volts on a/c switch your meter to d/c. You should have 12.5-13.20 volts on a fully charged battery with out the scooter started. Once you start the scooter, there are two tests, test the voltage at 1k rpm and 3k rpm. Both tests should be higher then 12 volts but not exceeding 15 volts, If your scooter over charges (over 15volts) you will blow out headlights, taillights and your battery.

[MrSemax]

Get information! So useful! I have had 2 of the same scooter and didn't know what was wrong with them. Now I know! Thanks!

[johngossett]

WOW! What a truly UNIQUE service! I see you use SMART cars, too! I bet that saves a LOT in overhead, huh? Sure wish u guys were in NE Tenn.! Keep up the good job, Guys!

[ibabuvu]

After a while of testing, I checked the kill switch. Sure enough, it had somehow gotten shut off during riding. that was my problem. Thanks for the vid. i was about to take it to a shop.

[christopherwatson]

That Kick Stand Switch was a New One on Me. God Bless, C.

[RollingWrench]

how many wires are on your cdi harness plug? be sure the two wires going to the coil are correct. you can even swap them to see if that does anything. if you have unplugged the kill switch, changed out the cdi, replaced the stator and the coil. The only thing left is the wiring. most importantly the blue wire with the white strip that goes from the stator to the cdi box. be sure all of the wires are secure on the plugs. I have seen a hand full of scooters with a wire coming out of the cdi plug.

[SirJayOfJersey]

I'm 13 and I learned how to drive back one of these in Dominican republic and it was easy

[RollingWrench]

You can test a coil, and stator for resistance. We have had very bad experience doing it this way. The problem is there is many different stators and resistance readings. However we do have many Chinese service manuals. I would recommend purchasing a new cdi box and a new coil. This is by far the simplest test. When purchasing them purchase performance coil and cdi that way its not a waist if the parts are not the problem, on top of that these are good diagnostic tools for later if needed.

[RollingWrench]

The rectifier regulators purpose is to convert the a/c voltage from the stator to d/c volt and regulate it so it doesn't go above 15 volts.

[RollingWrench]

This is true, However the stator has a pickup coil and one of the coils on the stator is used for spark. If its bad you will not get spark

[RollingWrench]

Full ignition is kill switch, kickstand switch(if it has one), cdi box, stator, ignition(key), or ignition coil.

[The-BCC]

Love that you are working out of a smart car.