Hello everyone.
I’m from Málaga (Spain) and after a few weeks reading and repairing an old Savage from 98 I’m stuck with the start.

Put a new battery but I don’t see sparks on my plug.
Followed instructions but the video at the common problems post is private and can not see it.
I’ve measured power at the coil (bobina de alta) but don’t have any power.

The black box with some wires is the CDI?  How could I check it?

Regards

Spavage wrote on 08/21/24 at 08:44:04:


can you provide a link to the post so I can find out why you can't see it?

Hello again,

This my CDI ?

Do you know how to test if it´s ok?

Wich wires come from the engine with the signal for the spark timing?

Is any way to check this signal? I wrote something about diodes blue and red but couldn´t see the video.

Regards

I'm not smart enough to answer your question, I'm sorry. The ignition will continuously fire the plug if the piston is at Top Dead Center, compression or exhaust. I don't know how long it takes to ruin the electronics.
If you need the key on for trouble shooting, pull the seat and unplug the CDI.
I guess pulling the plug wire Might do it, but being wrong is really expensive.

I don't know if the plug would have any indicators of being fired in a cylinder with no fuel/combustion.
How are you checking for spark?
Have you tried shooting WD40 in the intake and see if it fires? WD uses propane for a propellant,, or did a few years ago. You can use brake cleaner or Berrymans, but they are hard on the engine.
It doesn't take much running the starter before the battery doesn't have the charge required to spin the motor AND create the spark. It will still spin it over at a speed that sounds like it should fire up.

Have you had the carburetor off? Emptied the bowl? If so, it needs to be put on Prime to get it started. The petcock needs engine vacuum to open. Cranking it over with an empty carburetor bowl isn't going to work.

removed the spark plug and touching the engine head as ground press ignition, with the old battery, only did few spark.

It Did spark.

You didn't leave the key on After that?