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question for the mechanics on here

I have a kfx 400 which is a racing four wheeler and it quit fireing out of the blue for some reason I have put new stator new cdI box another wiring harness and a new plug on it and checked the coal and it still will not fire what else is their to do or check im about to the point to just burn it lol thanks

Few questions for you , is it electric start ? Or kick start ? I'd be checking battery voltages throughout the machine starting at the heart which would be the battery , and when your saying it won't fire is it cranking or completely dead .

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Nite Ch Ch Bell Mtn. Megan
(2012 UKC WV Gov. Cup Champ)

Our Past Titled Hounds :

Gr Nite Ch Cord's Lil Rattler
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(304) 549-1767 , Andy Rectenwald

Don't burn it lol just bring it up here and let me trade u out of it.

It will turn over and it was a brand new battery but i took it out and put it on my other four wheeler I been using a jump box to try ale it stays pluged up charging 24/7 so I know its good and hot

And it is electric start sorry

I had an 04 ltz 400 same bike. Did the same thing. All it was the actual wires where the start button was came loose. I did everything else like u did and took it to a shop. Cost 19$ I would check that.

Joe and yous would still turn over

Not until the wire was hooked up.

Mine will still turn over but the plug will not fire a lick

Fuel line ok? Check the wiring in ur kill switch also. Make sure fuel is getting into line. I have seen the fuel knob say it was on and the valve actually be stuck. Its pretty rare but it can happen

We cut kill switch off I don't think it came stock with one think it was added its a 04 it had a temp gauge to they must of used it for drag racing I think I took all that crap off it was a mess it ran when I first got it rode it for three hours and it just died got it back to shop and was not firing and ant since I did notice the kill switch spark for some reason when it hit my bar it was just laying their not hooked on bar

It has something to do with the ground and the kill switch sparking like that would more than likely be the problem. Your ground on your plug is connected with you kill switch in some way shape or form. If your going to oaks bring it by on ur way up and I will fix it.

Man I really appreciate all the help and i want be making it to oaks but I appreciate the offer if anyone else has any suggestions im up for trying anything I just need it fixed to sell I got bills I need caught up and don't want to sell my dogs with Coon season right around the corner

It def. has a kill switch and I would start with swapping it out might also want to check on the timing

quote:

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Originally posted by Blake Drinkard
We cut kill switch off I don't think it came stock with one think it was added its a 04 it had a temp gauge to they must of used it for drag racing I think I took all that crap off it was a mess it ran when I first got it rode it for three hours and it just died got it back to shop and was not firing and ant since I did notice the kill switch spark for some reason when it hit my bar it was just laying their not hooked on bar

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__________________
- Scary Creek Kennel -

@ Stud , 5 Gen . All Grand ,
Nite Ch Track Driver " Tank "
( 3 wins to GrNtCh )

Nite Ch Ch Bell Mtn. Megan
(2012 UKC WV Gov. Cup Champ)

Our Past Titled Hounds :

Gr Nite Ch Cord's Lil Rattler
Nite Ch Stylish Black Jack
Nite Ch Ch Wabash River Snap
Nite Ch Skipper's Stylish Hanna

Sponsered By :
Hillbilly Deluxe Dog Box's
(828) 925-4071
Eisenhut Dog Supply
(304) 984-1430
Mountainside gps/telemetry
Collar sales/repair
(540) 679-9628

(304) 549-1767 , Andy Rectenwald

TEST

Continuity test in the field stater if broken it won't carry any volts threw it . Test one side in other side out with power and a light bulb on tester . Clean all grounds from block to battery .

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tork wrench the hide hunter - English or Treeing Walkers with one Dandy Mule 309-937-5504 cell is 309-714-0734

kinda silly but maybe check the plug while your at it????

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need to look for fuse's also any saftey switchs maybe the kill switch, i dont no much about 4 wheelers but sound like could be something in that area

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DAVE STEGALL

Home of
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wont run

its a relay probably behind or close to the battery.

i dont know nothing about it sounds like you took off to much
at one time.i would start with timing if it ran for 3hrs and got
hot and quiet or if any fuseable links

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I don't run scared, I run to scare!

I would bet a million bucks its the kill switch. I would try putting another plug in the wire and turn the engine over to check for spark.. just to make sure the electrode in the plug isn't cracked. Jump the 2 wires that go to the kill switch together and that should close the electrical circuit and put fire back on your plug if thats what it is.. Also go through and check all of your ground wires and make sure they are tight and didnt rattle loose..

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check the plug.

I recently bought an old fashioned spark tester for 10$ you just hold over the sparkplug wire and ground it and the little lite will lite at the pulse. Lots better that undoing the plug and grounding it and getting shocked cause you can't see a spark plug spark in the daytime anyway. Just a wild assed guess. but if the timing is bass ackwards it won't tell you much and liable to get you confused up.

i wouldnt know how to time one of them things lol. usually if the timeings off it will back fire or the engine want turn over smooth. i hate working on 4 wheelers anyhow.lol

I looked at it last night the kill switch had a blue little plastic box with a piece of metal clamped to it holding it to another wire it was added to the existing wires in the harness thats why I thought it was aftermarket but I took that wiring harness off and put another one would the kill switch have a plug in to plug in the harness or would it already be wired their is not a kill switch on New harness when I say new it was a used one but if it has a plug would it have to be hooked up to fire or should it fire without it bein hooked up or if its wired in the harness would I have to figure out which wires it would go to and hook one up or should it fire without one

Thanks everyone for all the help I really appreciate it