2006-12-17 12:52:32 · 3 answers · asked by ZOOMER 1 in Cars & Transportation ➔ Maintenance & Repairs
Testing glow plugs is easy and can be done with them still installed in the engine. Just disconnect the wire going to each glow plug. Connect a test light to the POSITIVE (+) battery terminal and touch the point of the test light to each glow plug terminal. If the light lights, it's good. If it doesn't, it's bad and needs to be replaced. Do you replace just the bad one or all of them? My opinion is that if one went bad, then the rest are not too far behind. So I recommend replacing all of them at the same time. I would replace, at the very least, all of the glow plugs on the same side.
2006-12-17 12:57:37 · answer #1 · answered by Anonymous · 0⤊ 0⤋
use an ohmmeter...there should be a decently high number if they are good...if one is way off from the others then its bad
2006-12-17 12:57:36 · answer #2 · answered by jimmy V 3 · 0⤊ 0⤋
if you dont know history or car then replace them.
2006-12-17 12:58:21 · answer #3 · answered by Anonymous · 0⤊ 0⤋