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redrider311
06-09-2005, 02:47 PM
heres what happeend..

i was riding in about 4th gear just about 1/2 throttle and then the machine shut off..
i checked the gas and oil and they were fine.. the motor turns over and everthing it just wont start... i have yet to touch the machine im hoping its just a simple plug problem or jetting... any other ideas of what the heck coulda gone wrong
FoxMxRiders
06-09-2005, 03:06 PM
check your compression
check your sparks
check if you have fuel on your spark plug
MR.BIG
06-09-2005, 03:20 PM
Yeah exactly what he said!
redrider311
06-09-2005, 06:53 PM
i took out the plug.. it was a dark brown color.. i forgot what that indicates...

i went and bought a new plug... and i do have spark..

i put the plug in but it wont start ...

what now?
2001400exrider
06-09-2005, 07:01 PM
give ur carb a good cleanin and make sure ur petcock is turned to the fuel ON positon;) happens to the best of us lol..
toejamr1
06-09-2005, 07:39 PM
kill-switch?
redrider311
06-09-2005, 07:46 PM
i checked kill switch... its on... i have a tethered kill swith (tusk version not pro design) and i just wired it recently.. do you think something could have happeend here?


also what all do i need to clean when i do my carb?
redrider311
06-09-2005, 08:24 PM
ok i just re-wired the kill switch and its fine...

i havent gone to the carb yet cause im trying to see if theres another solution before i take the carb out...
redrider311
06-09-2005, 08:26 PM
also...how do i check for compression?

sorry for so many posts guys but im really trying to get this fixed ive got a race tuesday night
FoxMxRiders
06-09-2005, 08:56 PM
Originally posted by redrider311
also...how do i check for compression?

sorry for so many posts guys but im really trying to get this fixed ive got a race tuesday night

with a compression gauge

you can rent one at the auto parts

check if your sparks plug is wet
redrider311
06-10-2005, 08:25 AM
the plug was not wet...

if i rent a compression gauge... where do i put it to check compression?
dirtmomma
06-10-2005, 08:32 AM
Originally posted by redrider311
the plug was not wet...

if i rent a compression gauge... where do i put it to check compression?

In the spark plug hole :) You need to find out what your comp is supposed to be so you know if it's good or not!!
donniebrooke
06-10-2005, 12:22 PM
you may want to read through the thread of johnnydufus. he had the exact same thing happend to his ex and he is not looking into the possibility it could be the timing chain.
donniebrooke
06-10-2005, 12:23 PM
I ment to say he is NOW looking into the possibilty it could be a timing chain problem.
donniebrooke
06-10-2005, 12:25 PM
at a race about a month ago i was running full out in 4th gear then it bogged down like a blaster. my 400ex will not start, it tries to turn over and it doesnt fire up

at first it didnt have spark so i checked all of the electrical and replaced a fuse and cleaned all the connections and i now have spark... i put in a brand new plug and it still doesnt start up. so i searched and read about cleaning carbs so i just got done cleaning my carb and still nothing. i checked to make sure it had compression and sure enough it has compresion but it still wont fire up... help me please

i dont know what else to check
TRX_450
06-10-2005, 06:39 PM
make sure ur engine killswitch (orange slide button) is in the middle...play wit it a lil bit...its happened to me a few times and even tho it may be in the middle play wit it cuz those things are really touchy
400exrider36
06-11-2005, 03:56 PM
well as long as you have a spark, it shouldn't be your kill switch
DEAL
06-12-2005, 05:41 AM
the only other thing to check for is timming
Do you notice it turns over quicker or anything now?
RiderTRX400ex
06-12-2005, 02:20 PM
i heard about some sprocket hubs or wutever u call them on the camshaft that hold the sprocket breaking... just an idea..
like the motor will turn but the cam wont spin
vinson581
06-12-2005, 04:41 PM
you may have spark but is it a GOOD spark i mean test it with a OHM meter, and i will look up in my manual the acceptable range, this happend on my friends warrior and it was the PICKUP COIL, it was getting spark but the reading were WAY off, replaced the whole stator, with a NEW pickup coil and she fired off first push (after a full engine over haul).

if you need i can post pics of the service manual pages detailing how to go about testing the coil//

also do you have a aftermarket CDI? if so put the stocker on and give it a try, some cdi boxes (white brothers) make for hard starting.

if you still have a problem, i would be more then happy to help you fix it.

my AIM is

lilhanzyboy1

thats also my e-mail @aol.com

if you want you can give me a call.... 845-527-3778 (kyle) and i can try and walk you through it.

v581