She ran, she gave up again...

[DieselBoy]

My 400ex has been a nightmare to say the least, and tha's probably an understatement. Anyway...

I put a brand new electrosport stator w/ new pickup coil in and right after it started and ran great. After riding it a bit, shutting it off, i tried to start it, and it's acting just like before when the stator went. I can't imagine why it would fry already. It's brand new. Can a CDI be linked to a backfire/kick but a no start condition? I know a CDI can cause alot of spark issues, and Im positive that's the problem. Now, I just need to know what to do about the CDI. It's possible the stator may have taken a dump again but I'm hoping it's just a CDI.

It trys and trys to go, but it's just not enough. I'm thinking if i slap a new CDI on it will go, or, i may be left in the same situation all over again.

WHAT symptoms comes with your failed CDIs?
I need some help, I'm probably going to sell it for dirt cheap just to get it off my shoulders if I can't get this thing running with a new CDI/simple fix. the stators from Oceanside, CA. It costs 15 bucks to ship it back and forth...so I really dont want to do that again. It's just really weird how it could fluff up so fast if it indeed was the stator.

Any and all input is appreciated.

[bansheexcracer2]

If you take it to a shop they can put it on a tester and tell you what electric componant if any is bad.

[DieselBoy]

Originally posted by bansheexcracer2
If you take it to a shop they can put it on a tester and tell you what electric componant if any is bad.

oh, i know. for $90 dollars, i'll pass.

[wilkin250r]

How much did you pay for a new stator?

You probably don't have thousands of dollars to spend, but I would certainly suggest throwing a few hundred dollars at your quad to get it running, rather than dump it for dirt cheap and taking a loss. If nothing else, you can easily sell a running quad for hundreds of dollars more than a non-running pile of parts.

I'd try a new CDI, and a new coil. Forget aftermarket, go with OEM. Yeah, it's more expensive, but it's guarenteed to work. That's my philosophy. If you're chasing a difficult and unknown problem, always go OEM.

[DieselBoy]

i bought it from electrosport (www.electrosport.com) and it was 170 all said and done. its a 200W High output stator.
the coils ok, and its either: Wire harness, CDI, or stator.

the stator came with the 4 pin plug, and all matching colors with a new pickup coil, its virtually the same as the stock model.

[RiderTRX400ex]

if you got a buddy with a 400ex, try his CDI.. takes a couple seconds to get it off..

[bwamos]

You aren't running a timing advance key, and an aftermarket CDI are you?

[DieselBoy]

unfortunately don't know anyone with a 400ex that i can swap the CDI with. And there is no modifcations to the flywheel advance, the CDI is stock.

[1fst400]

I have a 400ex wiring harness laying around my shop. the teather and key where robed, but the rest is there. Has a wb cdi that I know worked when I took it off the quad due to motor swap. Let me know if you want it. Its layin under my tool box as of now.

[DieselBoy]

Originally posted by 1fst400
I have a 400ex wiring harness laying around my shop. the teather and key where robed, but the rest is there. Has a wb cdi that I know worked when I took it off the quad due to motor swap. Let me know if you want it. Its layin under my tool box as of now.

maybe.... how much you want?

[DieselBoy]

just another question before i fork out all kinds of money for a CDI...


What symptoms come with a faulty/failing CDI?

- Do they work sometimes, and not others?
- Can they cause difficulty starting?
- Do they produce spark at all?
- A little?
- None?
- Can they make it fire every couple rotations, consistantly?
- What specific symptoms are shown?
- Is it common for a Ignition control module (CDI) to dump being an electrical component?

My stator literally has 5 minutes on it. I can't imagine why it would bite the dust. It's MIND BLOWING. If it did, I'm going to be some angry. I'll have to send it back for a replacement if the CDI fails to fix it. :rolleyes:

It ran really good.

[1fst400]

theres ways to test the stator I know that. it produces electicity. so why not just test the wires for voltage when your cranking the motor over:confused: .



as far as I know thers no way to test the cdi box and it either works or it dont

[DieselBoy]

tested it. its the pulse generator like i figured. i guess i gotta send it back for another one... Maybe this time I'll bypass the harness wires that go to the CDI, and tap into the CDI plug. What a piss off.

Both times now it's been the pulse generator.