Hey everyone. My son has a 2005 marshin wolf atv. i was told that the cdi was bad. I replaced it and the atv still has no power at all. power goes to the rectifier, starter coil and cdi. no power goes to ignition coil from the cdi. no lights come on at all and does not even try to start. I'm a novice when it comes to figuring out why there is no power. Does anyone have any ideas?

Thanks,
Joe

 

I'm not familiar with Marshin ATV's what is your engine size? 4 stroke or 2 stroke? How many pins on your CDI? Is it 4, 5 or 6 pins? The six pin CDI will have two connectors - one 2 and one 4 pin.

It's very strange that you would not have power to lights and starter circuitry, but have power to the CDI. How did you measure power to the CDI? What did you measure exactly and on what pin?

 

Hi Lynn. Thanks for replying. It is a 110cc. It has a 4 pin cdi. I just took a simple tester I had in garage that lights up when it hits positive current. I am not in front of the atv but if memory serves me correctly its the black and red wire that comes from ignition switch.

 

You have a DC powered CDI since it is four pin. CDI's make spark, but have anything to do with power to lights, or instruments.

Ignition coils are driven with moderately high voltage, and high frequency pulses. But this is only when triggered, and this only happens when the engine is turning. So one wouldn't expect any indication of power at the coil with a stopped engine.

Also, you need a meter. Test lights are worthless pieces of garbage. They do well when probing things that run on 12 volts DC only, but so much of the circuitry on a quad runs on different voltage levels, and AC voltage, and pulsed AC voltages. Meters will do everything your test light will do, and a whole lot more. How are you going to measure resistance with your test light? How are you going to accurately measure voltages somewhere between 12 volts and zero volts? Ironically fully functionable meters cost a lot less these days than a test light. Go figure.

Meters have their limitations too, but they perform far and above those worthless testlights. Some stuff really needs an oscilloscope to measure accurately, but that is often far out of reach of the average person. So we live with the meter results. But there really is no excuse for living with the ridiculous limitations of a test light...

As far as power goes, are you sure your headlights are DC powered? Before, when you turned on the ignition, and turned on the lights (with the engine stopped), did the lights work? Some lights are AC powered directly off the stator, and only light when the engine is turning.

When the ignition is on and the brakes are applied, do your brakes light up?

 

Gidday guys, I have just bought a Marshin for one of my daughters. Any ideas where I might get a service manual for it? What are these bikes anyway, I havent come across them before. Any suggestions about in fo on the bike would be appreciated. Rergards John.

 

There is almost certainly no such thing as a service manual. I've never heard of Marshin either. I've never heard of the majority of chinese quad brands.

But the good thing is these "me too" importers are likely slapping together quads assembled with same generic parts made by others and sold to hundreds of quad assembly houses. So rather than look for specific info on Marshin quads - look for quads with similar engines. The info for other quads may be (and likely) compatible with yours.

 

Thanks kindly for your advice Lynne. Much appreciated. Warm regards, John.