honda 250sx electrical

[will1806]

hey guys once again i have a question. i think i finally figured my problem sorta. i have a new spark plug. and two coils. i figure one has to be good. they have worked before. though it only fires sometimes and it is weak. i can hold the plug in my hand and it wont shock me. so does anyone know what my problem can be. i have many extra electrical parts. is it the rectifier? the previous owner said when it died it did like it ran out of gas. i am thinking that something went out in the electrical system and he thought it ran out of gas. any help would be greatly appreciated.

[Tri-ZNate]

Rectifier is to ensure the headlight doesnt blow.

Check the CDI. I had mine go on a poker run and it was like it ran outta gas. If it the CDI it wont have ANY spark

[will1806]

cdi is that the ignition control thing?

[will1806]

where is the cdi located?

[BigReds Forever]

its under the left side panel (left side of rear fender on a sx i suppose), its a little black box with a clear/white plug going into the bottom of it.

[Dirtcrasher]

Mounts onto the battery box. Right there is where the wires break, at that plastic connector.

Easy stuff first, on/off, wire, key switch etc etc...

[will1806]

i have spark sometimes. sometimes it wont spark. any ideas on what my problem could be.

[Dirtcrasher]

Sounds easy, like a bad connection....

[will1806]

any idea were

[Dirtcrasher]

Like I said, your gonna have to 1st get a wiring diagram. That will show you hoe to jump the key sw. and the on/off sw. Then check every connection besides those 2. Don't feel so overwhelmed there are very few connections between the CDI, coil etc etc.

You HAVE to get a manual and check all the resistance readings and Ohmm out the wires - piece of cake!

[mark38090]

On my SX, I had the same problem. Someone on here told me to bang the CDI on a hard table and try it. It worked, everytime it wouldn't start I would beat the crap out of it on my work bench and I would get fire, if just for a few minutes. I picked up a CDI off of Ebay for $20 and haven't had a problem since.