Etz251 no spark

[jackotom]

Hi, my Mz etz 251 has been laid up for a long time
And now wont start, they seems to be no spark and the coil is getting hot
The bike ran fine a while ago.
Can anyone help.
Thanks dave.

[Blurredman]

Seems to be no spark? there is either no spark or spark, surely?

Electronic ignition or contact breakers?

[Puffs]

If your coil is getting hot it's constantly being charged, because for instance your points are corroded shut. Or something else is wrong. I think the advice is to check your ignition.

On the up side: the battery seems to work.

[jackotom]

Hi,took engine case of and the electronic ignition
was very corroded.
I cleaned it up best I could but no joy
Can these be repaired or can you still buy new ones.
Thanks dave.

[Puffs]

Hi Dave,

pics would help.

Yes, you can buy anything for these bikes, see for instance viewtopic.php?f=5&t=9257

[jackotom]

Hi, cannot get picture to load?
Does anyone know how to remove all of the electronic ignition.
I wanted to see it had corrosion behind it.
Thanks Dave.

[Andy_C]

Sounds like the electronic box or sensor is fried if the coil is getitng hot as it is continuously passing current.

Could understand if it was points stuck closed.

I had an ETZ 301 and that had electronic ignition - the sennsor was easy enough to remove as if memory serves it was obvious which screws held the sensor in.

Good luck.

[jackotom]

Just an update, put plug in and it did not spark but when put back in bike I kicked
The engine over a few times and nothing happened
But when I turned the ignition of it backfired
And a oily mixture splatted on back of my house.
Does anyone know what could be wrong
Thanks.

[Blurredman]

Take the spark plug out

Then turn the ignition on. if it sparks when the ignition is turned on, I think the black box is blown, likewise when turning the ignition off.

I have done this myself by mis-wiring the system before now.

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.

[jackotom]

Pic of mz electrics.

[Blurredman]

From which ocean did you pick that out of?

Nah I joke- but seriously- I had the same ignition that I blew- Did you try as I suggested?

[Puffs]

Following a biased and flawed moderator choice (someone posting aggressive personal attacks is rewarded, while my technical posts are removed - behind my back & without any justification!), I have withdrawn from this forum.

[jackotom]

Hi,thanks for all your help.
I did remove the generator cover and cleaned it out, it was a bit rusty, I think I need to strip the generator and get any corrosion of the parts.
I have some new brushes and the part the brushes fit into(sorry don't know the name)
I don't know were to connect a mutil tester to test things as I cannot find my Haynes manual!