Thank you!
I've done this manually, just using the multimeter and crawling on top of the motor while it's idling. It does work.
Except.... you would need to know you have good glowplugs....The tool would be invaluable for van mounted engine then.
Which you still should be able to see using the tool. You will see a major difference in resistance or voltage between a good one and a bad one. Usually a bad one is open circuit.Except.... you would need to know you have good glowplugs....
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With a modern multimeter, it won't matter, voltage or current. Does it matter if you get a "-.020mV" or a ".020mV". We know it means the same thing.True and true.
Also, there are two 'probes' on the back of the switch unit. I would assume that those were supposed to plug into whatever volt-ohmmeter that this was made for.
You'd have to figure out which was positive and which was negative, but I don't see why you couldn't thereby hook it up to any other volt-ohmmeter. There is nothing on the unit itself to indicate which is which.
Why, because of oil vapors? Honestly, it's been a while since I've done this, but from what I recall, the rears weren't noticeably higher than the others.Not really an accurate design. Rear cylinders are always going to read different...
Which you still should be able to see using the tool. You will see a major difference in resistance or voltage between a good one and a bad one. Usually a bad one is open circuit.
With a modern multimeter, it won't matter, voltage or current. Does it matter if you get a "-.020mV" or a ".020mV". We know it means the same thing.
Ohm reading will be a positive number either way as well.
Why, because of oil vapors? Honestly, it's been a while since I've done this, but from what I recall, the rears weren't noticeably higher than the others.
Either way, if you get a consistent value, you can always swap two injectors and see if the voltage difference moves, which is what you are really doing here - finding relative differences and then adjusting them.
I also recall always seeing a low reading after a high one based on firing order - so if, say, #3 was reading 028mV, #4 might read 017mV, with the average being close to 20.