If you dont want to waste fine wine, buy cheap bag of lemon acid in store.

So I took the carbs apart, cleaned them good and put everything back together, but now i dont get the spark :helpsmilie:

I tested the ignition coil and everything looks ok, I also borrowed another coil from a friend and still no spark. The sidestand, clutch and other switches are also fine. The one thing I noticed is that before, when I was starting it the rev light was coming on but went out as the engine fired up, now I dont get the rev light???

Go back and think what you have been moving around of the electrical wires when you removed carb, bad connection somewhere i recon. If you had spark before you remove carb, it doesnt dissapear over night by itself.

Could be a Stator or Pick-Up coil problem. (also known as Ignitor) This is attached to the Stator and can usually be replaced ... but you could also have a bad Stator (expensive)

Your manual may show testing procedures for both Stator and Pick Up coil ... but these tests do not always prove the problem decisively. Best to replace with KNOWN TO BE GOOD units.

Other issues could be:
A lose wire or connection?
One of the safety cut outs is blocking ignition:
Side Stand safety switch
Clutch switch
Neutral safety switch
key ignition unit and connections (wiggle wires under dash around switch)
fuse issue
Bad plug wire or connection

Good luck! bier

What model and year is your bike? Did you check your kill switch, I've been guilty of not noticing it in the off position myself.....

If you have an older bike, like 84 to 89, it will have the older CDI under the tank between the frame plates behind the steering head. There is a Black with white stripe wire. This is a kill wire that the ignition and the handlebar kill switch will ground to kill the engine. If you unplug it, that takes away anything kill wise that could be at fault.

If you have a side stand switch, follow the wiring up to where it plugs into the main harness, unplug both wires and on the harness side, plug the wires together as they are male and female. This will bypass the side stand switch. Check the multiple wires going to the stator, there is a plug and 2 individual wires. Make sure they are clean and seated well in the connectors.

If you have a newer TCI ignition it will have connection plugs built right in to the unit. I cannot speak to that as I've not had experience but same common sense approach to checking wires plugged in completely and not corroded.

Lets us know how it goes....
Steve

Its a 1992 xt 600E. I have checked all the wires the coil, the stator and all is in the specifid limits. I really have no clue where the fault is. I even have 12v coming to the coil and I wired a bulb to it and I think the bulb should go on and off, in my case its just blinking and not going completly off :confused1:

Your not low on power? try recharge battery for a day.

The battery is good, I also hooked it up to a car but remains the same...

And checked the main fuse? Rectifier?

The fuse is also ok.

Not sure about R/R though, but I think it doesnt have anything to do with the ignition?

Borrow a TCI unit from your friend and test.

If you measure the coil primary(+-) : 3,4-4,6 Ohm, secondary(spark plug lead -) 10,4-15,6 ohm

he has a 1998 xt, is the tci the same?

It shows 4,0 and 13,4