How much resistance should a glow plug have to be good?
Thanks tor your come back. I had to buy new ones. Tested them on a 12V batt. and it takes about 30 sec. to glow red.2 ohm max but they need to b disconnected from each other..
I don’t trust the ohm test.
I ALWAYS takem out and count to 10... they should be cherry red, by 10.