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Actually, I’d expect to see between 1 and 2 ohms for a brand new plug, but 3 will still work. I don’t think it would be working at all if it were .3 ohms.
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I am confused. 4A x 0.3 ohm = 1.2V
I thought you originally said 3 ohms.
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I didn’t count the seconds but it was less than 10. Wouldn’t that be 40 amps?
Less than ten seconds is good, that means that ten seconds is all you need for any particular starting cycle.
I’m assuming you have a fully charged battery at 12 volts nominal, so:
The voltage V in volts (V) is equal to the current I in amps (A) times the resistance R in ohms (Ω):
V(v) = I(a) x R(Ω)
Maybe you have it confused with 48 watts?
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OK, I got a glow plug out. It measured 3 ohms, but I used my jump box to put 12v on it and it glowed red.
Yes, that’s a good one. About how long did it take for it to turn red? 4-5 seconds? If you connect it in series with the shunt you will be able to see the actual amperage draw on your ammeter.
So, 3 ohms at 12 volts equals 4 amps (48 watts).
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Greetings Matthew.
It could be one of a couple of things. You could have a relief valve stuck open, or you could have the hydraulic pump coupling sheared. Have you determined that your pump is actually turning? Of course I wouldn’t expect the seller to own up to something stupid he did, because his scenario wouldn’t have had that effect.
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I have been triggering them for about 30 seconds
That’s going to reduce their life span. They don’t get any hotter after 10 to 12 seconds. All you are trying to do with them is warm the air in the combustion chamber, not warm the entire engine. But it’s your call.
I like that volt/ammeter. Where did you get it?
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I think that initially you should show around 8 amps per glow plug, and that will go down as the plugs heat up. Don’t energize the plugs for more that 10 to 12 seconds.
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Wow, that trailer interior is nicer than my cabin.
I have to hand it to you Eric, you’re doing way more than I ever could.
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