A very poor spark

[mnes09]

This is my first post so tell me if its ok.

when I started my car sounded like if a piston dosn´t work and began throwing black smoke. I check the spark and was too poor. also i check the coils and read like 1.2 ohms.
can you tell me what else can check or what do you think could be?

the sparks plugs and wires are almost new (like 100 miles)
Its a 4g63

 

[DSM1G90]

deleted

 

[Phantom DSM]

For the primary coil, 1.2 is close to what chiltons shows to get between .7-.9 ohms.
Op, you can test coils when temp is in 70s , follow diagram below on testing procedure but for the secondary values you want to be within 11.3-15.3 Kohms( the diagram values in the image below are for a 1990 coil). Test it out and see what values ou get for the primary and the secondarys before you get another coil pack.
I recommend NGK Bpr6es spark plugs gapped at .028" as well.
Check for spark at all cylinders by grounding the spark plug wire and see if its arcing.
Also if you have any check engine codes, post them up. Usually bad misfires will cause check engine light to start flashing during hard accelaration as well. Black smoke usually means its running rich, deends if it is constantly doing that.

 

[mnes09]

sorry for being late, the problem is fixed, was the ecu and the mfi relay.