I been flying for 10 years and still do not know much about glow plugs. How do you know when one is bad other than the engine starts running bad. The other day I had an old OS .40 running sickly, I changed glow plugs once and was still doing the same thing. I changed to a Tower plug and the engine started running like a Singer sewing machine. Makes no sense to me how these plugs work. I usually use the o.s. #8 90% of the time. The two plugs that I removed seem to glow brightly with power applied. The Tower plug did have a Idle bar however, I really do not know what the diff is, maybe one of you engine geeks can explain these plugs a bit. Thanks, Brad
- posted
19 years ago