What is the best way to bench test glow plugs ? 
Bench testing glow plugs
- Thread starter fuzzy1626
- Start date
Andylad13
DieselBoy
is it for your idi? if so...test light the wires!
Mr_Roboto
Full Access Member
With an ohm meter. Resistance spec for GPs = .5 to 1 ohm cold.
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Thanks
HammerDown
Full Access Member
Funny thinking back now...20 years ago when I first purchased my Truck (new), every season before winter I would take out all the GP's and hand test them. 
Hold a GP in hand with a pair of Vice-Grips and touch a hot wire to the plug end then...I would count to 8-10. The ones that had a slow heat rise time were then replaces. You could definitely see some weak/slow GP's that way.
Hold a GP in hand with a pair of Vice-Grips and touch a hot wire to the plug end then...I would count to 8-10. The ones that had a slow heat rise time were then replaces. You could definitely see some weak/slow GP's that way.
jimraelee
Full Access Member
HammerDown, that seems like alot of work, LoL .... why not just use a test light to check for good glow in the light??? I do that now and works good...
HammerDown
Full Access Member
That's what I did the first few years of ownership I was new to Diesels and also had a bit of curiosity...since then I use the test light method>after I purchased a manual for it
jimraelee
Full Access Member
HAMMERDOWN: funny what we do when we don't know different... I remember jumping in a new endivour, and have some old guy come up and start laughing at me... "Son why you do it that way, Here try this" ends up saving me but load of time... LoL
