The only way I would know would be to use an ohmmeter on a known good one and compare the two. If you knew someone with the same model, it would be worth putting it in their car temporarily to see if it is the culprit. If it is indeed bad, I believe it would be a good indication that rebuilding the timing chain system and top end of your motor will get everything back in good shape.

Is there anyone in Michaels area with the same model 190?

Good luck and God bless America,