newbee terring it up

[chasthanhburns]

ok so i got a rm 250 1985, i think. i couldn't get it started so i toor it up. someone has put a diffrent coil cdi and i beleave they re soddered diffrent wires to the stator. i get resistence from the coil but on stock it has two wires coming from the cdi to coil this coil has only one. ? dont know the number for the coil. The cdi # is 32900-41421. i get voltage out of stator but understand that one line should put out more but cant be sure which cus of previous wire change.
cdi i have no idea of how to test cus it aint the original. wire colloring is diffrent.
i will attach pictures if i can.
if anyone can tell me (1) how to test cdi while not on bike?
(2)which line fron stator should go to which line on cdi?
(3)why coil only has one line from cdi?
(4)why someone would do this to any machine? Use the right parts or give it to someone who will!

[chasthanhburns]

Ok So I Cleaned Everything Up, Cut All The Wires Put On New Connecters New Spark Plur, And Behold There Is Spark!!! Well Over 300v At The Plug. Still Wont trailprotrailprotrailprotrailprotrailprotrailpro Start. And That Thing Aint Light Trying To Push Start Down The Street!
I Got Some Gass Leaking Out Of The Carb Drain Hose And Maybe Somewhere Else On The Carb Hard To Tell.
Could This Be A New Problem?
Oh And I Sprayed Starter Fluid In The Carb And Still Wont Start.
Did Get It To Fire Once Though!
Any Ideas?

[300rman]

if you got it to fire, its probably a fuel delivery problem. take the carb apart and clean it, then after its back together, use starting fluid to try to get it running.

[nd4speed]

The CDI is Suzuki- which you have probably already figured out. If it was aftermarket the CDI would have to match.

The carb leaking can be a problem but usually would flood it and the plug would be wet.

You got it to fire, That's a good sign. How long did it run for?

Timing may be off. Not sparking at right time.

Did you jet the carb for cold winter weather?

[chasthanhburns]

ya im getting well over 330 at plug now and just read in manual that gas draining out when not running is normal per suzuki manual.
as for firing it fired maybe three piston strokes.
i would have thought that the starter fluid would have did it even if carb was problem.
im wondering if maybe the stator is on upside down and its sending spark at bottom of stroke. is that possable?:wondering :wondering

[nd4speed]

Dump like 2 drops of mixed gas in the cylinder and try it.

I would start with the carb.

Is the carb jetted for cold winter air?

[chasthanhburns]

not sure if it jetted for cold but i was trying to start it in the living room so that shouldn't matter(girlfriend loves this)
i was going to try the gas into the cylender but wasn't sure if that was ok . now i've loaded it on to the truck to have someone else look at it ut i think i will pull it back off and try.
any idea about the stator being on upside down?

[chasthanhburns]

anyone know what the compression should be for 1985 rm250?

[chasthanhburns]

ok i got it to fire up the stator isn't off this bike and someone ground out the slots to screw it on so that it would fit it has to be turned way to the end they just made the slit longer , but now it wont stay running and revs way high. please help i got it this far?

[chasthanhburns]

allright i figured that i needed to recheck the gas mixture. Whate the bottle says 32:1 and the manual is saying 2 gal. to 12.8 oz.. that aint 32:1 thats 20:1! maybe that will explain the high rev.(du) STARTS RIGHT UP RIGGED UP STATOR AND WAY LEAN GAS. I THINK I" GO GET A DUN BUGGY NOW.

[chasthanhburns]

can somone please look at this trailprotrailprotrailprotrailpro and help


ok let me give as complete as discription as i can.
it is an rm 250 but it has had diffrent parts put on by previous owners.
i beleave the stator and cdi are from a 1979 the color on the wires dont match from stator to cdi but i was able to get it started for a while, the the stator wire at the coil broke no way to fix so i bought a new stator now i cant get it to start. unshure if i have wires going to the right cdi wires as they are diffrent color. i do get like 30 ish volts to the ignition coil, but no spark. on the original stator it has a wire conecting two coils then leads to cdi. another wire go to coils to cdi the the othere coil wire goes to ground then to cdi.
on the new coil one wire conects the two coils and at the other end of coils the wires lead to the cdi with neither of them being grounded first.

so i guess my question is is 30 ish volts to ignition coil enough that it should spark cuz coil test good as per ohm.
and is the cdi for the 85 in some way groundig the stator wire which the 79 grounds at the stator.
i think what im gonna do is just ground the stator wire which corsponds to the old one, and cross my fingers , but i will wait for any responce for about 6 hours.
and if im being an idiot please dont hesatate to tell me cuz all i really care about is getting this bike going and yes i know i should just replace the whole electrical but allas im poor!

[Vealmonkey]

Have you compared wiring diagrams from the 85 and 79 wiring schematics. I would start there. Also, make sure where the coil attaches to the frame with the bolts that those areas are nice and clean and rust free. You will probably have to just end up getting the proper parts for the year bike you have and start from there, but it sounds like you're not even 100% sure what year bike you have. It sounds like you are missing alot of important info. You say the suzuki manual says the carb should leak gas if it isn't running???? I know that isn't right. I also hope that you had the throttle wide open while shooting the ether in the carb. Have you tried disconnecting the carb from the intake and shooting the ether (starting fluid) directly into the cylinder intake? Maybe take the plug out and putting ether directly into the spark plug hole? It sounds like you are battling too many problems to have just one thing work for you. How about some more pictures of what you have for your wiring since you said you have a new part.

[chasthanhburns]

allright ya it is an 85
and ill get pictures right now
give me about 10 min
i did compair wiring diagrams thats how i know 79 stator has one of the lead wires to the cdi grounded

[chasthanhburns]

here they are get more in a min

[chasthanhburns]

here is the rest

[chasthanhburns]

cant seem to get manual up rigt but if it works this time its on bottom of page
any way its on page 210 of clymer manual m379

[Vealmonkey]

I hope that you noticed that it said some fuel, not a large or constant flow, which would indicate a problem. Do you have a pic of the 2 stators side by side? Have you tried to compare wires that way? Sometimes the colors may be different buy you may notice that the different colored wires are run the same way. Let me try and study your wires some.

[chasthanhburns]

im gonna go and re check the grounding of the coil but i have it real tight and cant imagine that it aint grounded and if it isnt im an as#

[chasthanhburns]

can you tell me what amount of voltage i should expect out of the cdi before the coil

[Vealmonkey]

Ok, now which of those cdi boxes are supposed to be for the year of your bike? Where is the proper year wiring diagram? I don't know what the voltage should be, it should tell you in the repair manual.

[chasthanhburns]

the one i now have on the bike is for the 85 bike. the stator on the ground is the 79 this is the one i took off.



the manual only tells me ohms for testing coil and stator as for cdi it pretty much says to replace if coil and stator test good and bike still wont start

[Vealmonkey]

So the silver box is the one that is on your bike now which is the proper one? What are the colors of the wires coming from your kill switch? Let me know.

[chasthanhburns]

the black cdi on the floor is form the 85 but the wires dont match the 85 stator so in fear of hooking it up wrong and blowing it it will stay one the floor the silver cdi is the 79.
the kill switch wire on both are black with dark yellow or greem strip

[Vealmonkey]

Where is the wiring diagram from the manual? It seems strange that your kill switch has only 1 wire. Most dirtbikes have 2.

[Vealmonkey]

Also, what does that end plug look like on your stator? It looks like the black and white wires from the cdi with the special ends plug into your stator. do you have a couple pictures of that stator plug? Does your manual have a wiring diagram in it? If so, put up a pic of it.

[chasthanhburns]

the black/ yellow wire is the one from cdi the other wire is ground

[Vealmonkey]

Ok, see if this makes sense. Yellow/black from cdi to kill switch. Black/red or Darkgreen/red from cdi to Black/red or Darkgreen/red on on stator. Red/white on cdi to red on stator. Black wire on cdi to Black wire on stator. White/blue wire on cdi to spade terminal on coil. Black/white wire from cdi to either bolt that bolts down coil.

[chasthanhburns]

ill give it a shot and let you know tomorow
thanks man your more help than i,ve found other places.
except red on stator is red with black strip

[Vealmonkey]

The pics are a little fuzzy, give an old man a break! LOL That should be pretty damn close if not dead on.

[chasthanhburns]

i hope if not im gonna get another coil and try agian