Testing Glow Plugs
Submitted: Saturday, Apr 24, 2010 at 16:12
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Dave... Adelaide (SA
Hi everyone, i have done a search, but seeing as the search function on this site is poo, i can't find any bleep ing thing on here. So, my question is as follows: how do you
test the glow plugs with a multi-meter while they are still in the vehicle? If it is possible, of course. The vehicle in question is a '91 turbo diesel Hilux Surf
Reply By: Stu-e - Sunday, Apr 25, 2010 at 22:21
Sunday, Apr 25, 2010 at 22:21
with stuart p, the other auto sparky
you can
test it like the others said but it wont tell you JS,
if you wish to
test them in the vehicle you will need to
test for power at the rail you can do this with your meter and
test for voltage, if that is ok you can remove the buzz bar, and
test for resistance like the others said, this is about as much as you can do with a std mullimeter, to
test further in vehicle you will need a ampmeter capable of at least 20amps and connect this form batt pos to the terminal on top observing how many amps are being drawn and how fast they drop away they should be similar but dont power up for longer than 10 sec as you cant see how hot they are getting.
to
test them properly you need to remove them from the vehicle
a ampmeter capable of at least 20amps and connect this form batt pos to the terminal on top while holding the hex of
the nut on negative observing how many amps are being drawn and how fast they drop away and the time they take to glow cherry red at
the tip NOT HALFWAY DOWN they should all be similar, this will give you an indication as to how long the timer should be glowing them for.
if any need replacing do the whole lot its alot easier than doing the same job again next winter
Stu
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