just got 2-1985 250sx for $350 both have no spark ?

**honda 4h** · 02-28-2007, 07:19 PM

i just picked up 2-250 sx. one good. one parts bike. but both have no spark.the guy told me the rec-box is bad.but i started up my 250 bigred unpluged the box and it still ran fine.what do you guys and gals think.

**hutin' unit200m** · 02-28-2007, 07:31 PM

put your big red coil on it and see if it fixes it

**atctim** · 02-28-2007, 07:35 PM

do either have a battery that you could check to see if your Neutral Indicator light comes on while in neutral? If they do not come on, check the reverse/neutral plug connection down by the gear shifter.

**honda 4h** · 02-28-2007, 07:57 PM

thanks i will try the coil and neutral/reverse.will it start in neutral or reverse.i will try on the bigred.

**Dirtcrasher** · 02-28-2007, 08:23 PM

If you don't have spark I'd jump out both the keyswitch and the on/off slide on the bar switch which will eliminate them as a problem.

Then I would check the frame ground and then see if the coil has the correct resistance.

Last would be the CDI or a break in the wires. I have seen the 85 SX have a bad connection right at the CDI plug under the taped wires, so check it out!

**tecat-z** · 02-28-2007, 08:37 PM

A pulse generator coil will also leave you without spark. It's a inexpensive piece thats under the stator located in the stator cover. It does require taking off the stator side cover and starter gears. So pay attention how they go in reverse order. It's not a bad job if your mechanically inclined. I think they're about $40. This happened to a friends 85 sx. Still running great. But start with the most obvious causes first, as stated. Good luck

**Kintore** · 03-01-2007, 10:46 AM

Been there before, make sure they are both in neutral, It was a bugger for me to find it and wola. She started right up.

**honda 4h** · 03-01-2007, 01:58 PM

thanks guys i will be working on them tonight or one.i will let you know what it was.

**Kintore** · 03-01-2007, 05:46 PM

Hmm where in ontario are you? 4h dairy? lama?

**honda 4h** · 03-02-2007, 01:04 PM

i am in the ottawa area.

**Dirtcrasher** · 03-02-2007, 01:17 PM

I thought neutral only affected the electric start from working??

I believe it would have spark without that switch working. I'd have to check the wiring diagram to be certain.

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just got 2-1985 250sx for $350 both have no spark ?

coil?