[HELP] 4 Stroke Chinese Quad.
#1
So, I got this Quad today, I don't even know what kind it is lol, all I know is it's a 4 stroke. So my problem is, when I turn the key, it won't turnover or try to fire up. Battery is good by the way. I'm pretty sure the starter is f****cked.. but I was wondering if there was a way to bypass anything? Maybe hot-wire it.
My video of it trying to start!
This guy basiclly is having the same problem as me in the video.
My video of it trying to start!
This guy basiclly is having the same problem as me in the video.
#4
Where is that humming sound coming from when you jump across the solenoid? Have you got a battery charger or battery booster hooked up while you're doing this? Electrical things that run off DC don't hum even if overloaded. That's why I'm wondering if you've got something hooked up to your battery that runs off AC mains power.
I would take a meter set to measure DC volts on the 20 volt scale and measure the voltage right on the starter motor while jumping across the solenoid posts. Red lead goes right on the starter motor input post, and the black lead goes onto the starter motor case.
If you have 11 volts or higher then your starter is bad, or the engine is too hard to turn. If you don't have 11 volts or higher then measure the voltage right on the battery terminals while jumping the solenoid. You should have better than 12 volts while the starter is cranking.
Try jumping your quad battery to your car battery (be extra sure to get the polarity right). Then measure the battery and starter voltage as above while the starter is turning. Any difference?
All of the above has nothing to do with why your start button isn't working. That problem is completely separate, but I expect that will be easy to solve once you have the starter turning and the quad starts up when jumping the solenoid.
I would take a meter set to measure DC volts on the 20 volt scale and measure the voltage right on the starter motor while jumping across the solenoid posts. Red lead goes right on the starter motor input post, and the black lead goes onto the starter motor case.
If you have 11 volts or higher then your starter is bad, or the engine is too hard to turn. If you don't have 11 volts or higher then measure the voltage right on the battery terminals while jumping the solenoid. You should have better than 12 volts while the starter is cranking.
Try jumping your quad battery to your car battery (be extra sure to get the polarity right). Then measure the battery and starter voltage as above while the starter is turning. Any difference?
All of the above has nothing to do with why your start button isn't working. That problem is completely separate, but I expect that will be easy to solve once you have the starter turning and the quad starts up when jumping the solenoid.
#6
Your battery charger puts out a voltage, but has a maximum current too that is most likely way under what you starter needs. Voltage and current are not the same, and you need both in a big way when cranking the starter motor. Lack of voltage and/or current will cause the starter motor to stall.
If you really did have a charger hooked up during your video test then almost certainly your battery is complete toast, and your charger (understandably so) is not up to the task of turning over the starter by itself. The charger under complete overload *hums* at twice the AC power mains frequency which would account for the hum in the video. It sound to me like the battery lasts about 1 second, then the charger goes into overload at two times the AC power mains frequency. Does what I'm saying sound right so far?
Definitely do the "jump to your truck battery" test. Does your starter turn normally when you jump the solenoid after jumping your quad battery to your truck? This is key info. But again I warn you - get the jumper cables hooked up right when you do this. Take extra, extra care. You can damage your quad if you hook the jumper cables up backwards. Plus to plus, and minus to minus...
One more thing if you get a new battery. Quad batteries are little. They need to get charged with a current level of 2 amps or less. Never charge a tiny little quad battery with a car/truck battery charger unless you can set the charge current to 2 amps or less. Otherwise you'll quickly ruin the new battery.
If you really did have a charger hooked up during your video test then almost certainly your battery is complete toast, and your charger (understandably so) is not up to the task of turning over the starter by itself. The charger under complete overload *hums* at twice the AC power mains frequency which would account for the hum in the video. It sound to me like the battery lasts about 1 second, then the charger goes into overload at two times the AC power mains frequency. Does what I'm saying sound right so far?
Definitely do the "jump to your truck battery" test. Does your starter turn normally when you jump the solenoid after jumping your quad battery to your truck? This is key info. But again I warn you - get the jumper cables hooked up right when you do this. Take extra, extra care. You can damage your quad if you hook the jumper cables up backwards. Plus to plus, and minus to minus...
One more thing if you get a new battery. Quad batteries are little. They need to get charged with a current level of 2 amps or less. Never charge a tiny little quad battery with a car/truck battery charger unless you can set the charge current to 2 amps or less. Otherwise you'll quickly ruin the new battery.
#7
So I hooked it up to my truck, it turned it over really, fast. Spark plug is also getting fire at the same time. Still don't start.
Trending Topics
#8
So your battery is completely duff (your earlier protestations to the contrary). And your charger is questionable. You never responded to the question about what level of current you charged your little quad battery at. Before you get a new battery (which could get quickly ruined if it is over or under charged) lets make sure your charger is not too big, and lets make sure your quad charging system is OK.
But before that, get your quad running. Do you have compression? Have you ever adjusted the valves? Is the plug wet with gas after cranking? What engine do you have?
Do you *really* have spark (this question is based on your "Battery is good by the way" statement in an earlier post). Please don't post based on wishfull thinking. Facts (and only facts) are what we need...
But before that, get your quad running. Do you have compression? Have you ever adjusted the valves? Is the plug wet with gas after cranking? What engine do you have?
Do you *really* have spark (this question is based on your "Battery is good by the way" statement in an earlier post). Please don't post based on wishfull thinking. Facts (and only facts) are what we need...
#9
Okay, my Battery Charger is only a 6amp, for 6-12volt battery's. It will try to turn it over a few times, then it shuts off, then 5 seconds later it turns back on. That's why I hooked it up to my truck, when I hook it up to my truck battery it turns it over fast, but still no start.
(THE QUAD BATTERY IS TOAST, I'VE KNOW THAT SINCE I'VE HAD IT.)
Yes my plug is getting a spark(Good when I use my truck battery, I've tested it.) and yes, after a few times of it trying to crank over, when I take my plug out, it's coverd with gas.
I haven't taken the motor apart yet, cause I can't get it open. I'm afraid if I pry it open I might crack the motor case.(I can't get the head or anything else off so I can look down in the head and at the piston).
(THE QUAD BATTERY IS TOAST, I'VE KNOW THAT SINCE I'VE HAD IT.)
Yes my plug is getting a spark(Good when I use my truck battery, I've tested it.) and yes, after a few times of it trying to crank over, when I take my plug out, it's coverd with gas.
I haven't taken the motor apart yet, cause I can't get it open. I'm afraid if I pry it open I might crack the motor case.(I can't get the head or anything else off so I can look down in the head and at the piston).
#10
You must not charge any new quad battery at more than 2 amps or it will be damaged. Get a motorcycle battery charger that puts out less current.
Your statrter is good, and you have spark. The old saying applies:
Spark, fuel, compression.
You've got spark and fuel. What's the compression? Have you ever seen this quad run?
Again, what size engine? Do you have pictures?
Your statrter is good, and you have spark. The old saying applies:
Spark, fuel, compression.
You've got spark and fuel. What's the compression? Have you ever seen this quad run?
Again, what size engine? Do you have pictures?
Okay, my Battery Charger is only a 6amp, for 6-12volt battery's. It will try to turn it over a few times, then it shuts off, then 5 seconds later it turns back on. That's why I hooked it up to my truck, when I hook it up to my truck battery it turns it over fast, but still no start.
(THE QUAD BATTERY IS TOAST, I'VE KNOW THAT SINCE I'VE HAD IT.)
Yes my plug is getting a spark(Good when I use my truck battery, I've tested it.) and yes, after a few times of it trying to crank over, when I take my plug out, it's coverd with gas.
I haven't taken the motor apart yet, cause I can't get it open. I'm afraid if I pry it open I might crack the motor case.(I can't get the head or anything else off so I can look down in the head and at the piston).
(THE QUAD BATTERY IS TOAST, I'VE KNOW THAT SINCE I'VE HAD IT.)
Yes my plug is getting a spark(Good when I use my truck battery, I've tested it.) and yes, after a few times of it trying to crank over, when I take my plug out, it's coverd with gas.
I haven't taken the motor apart yet, cause I can't get it open. I'm afraid if I pry it open I might crack the motor case.(I can't get the head or anything else off so I can look down in the head and at the piston).
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)




