glow plug insulators
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Joined: Aug 2006
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From: Perry Georgia
glow plug insulators
When I was removing the glow plug wires to check the glow plugs, some of the insulation on 3 of the glow plugs disintegrated in my fingers as I was turning the glow plug wire before pulling the wire off of the glow plug. This is the insulation at the top of the glow plug. I wasn't removing the glow plugs just checking them for continuity. These plugs checked good. 3 others checked bad. Will this hurt the glow plug to run them like this? I'm planning to replace the bad plugs and now figure I need to replace these without the insulation to. Just not right this week. By the ay, my truck is a 1987 F250 with a 6.9 N/A.
i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
no, it will not hurt anything to run without the insulation on the wires.
the insulation prevents you from getting a short if a piece of metal hits the engine and wire when the glow circuit is working.
when you change the glo plugs, buy some heat shrink tubing and put it on the wires to cover the connectors.. that is all you will need to do.
the insulation prevents you from getting a short if a piece of metal hits the engine and wire when the glow circuit is working.
when you change the glo plugs, buy some heat shrink tubing and put it on the wires to cover the connectors.. that is all you will need to do.
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From: Perry Georgia
AMAZING!! New glow plugs and she starts the first time. Went to the Oreilly's close to me (they told me they had the ZD9's) and the guy pulls out AUTOLIGHTS. NO NO NO!! Ended up going for a bike ride to get the plugs. Oh well. it was a beautiful day for a ride.
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i am testing my glow plugs with a fluke multi meter set on resistance. i notice that when the glow plug is out of the truck, sitting on a bench i get no resistance. an open. when i put said glow plug in the engine i get 1.5 ohms. why is this? also, what caused me to test them is last night i went to start my truck and upon turning on the key the glow plug relay went on and off repeatedly really qiickly. i figured bad g/p. i tested all of them, found one bad one and replaced it. now the relay comes on for about 5 seconds then goes of and on really quickly. it used to come on for 10 to 15 seconds depending on how cold it was. could this be a bad relay?
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Cargo Master
Joined: Feb 2007
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From: Taylorsville, NC
i am testing my glow plugs with a fluke multi meter set on resistance. i notice that when the glow plug is out of the truck, sitting on a bench i get no resistance. an open. when i put said glow plug in the engine i get 1.5 ohms. why is this? also, what caused me to test them is last night i went to start my truck and upon turning on the key the glow plug relay went on and off repeatedly really qiickly. i figured bad g/p. i tested all of them, found one bad one and replaced it. now the relay comes on for about 5 seconds then goes of and on really quickly. it used to come on for 10 to 15 seconds depending on how cold it was. could this be a bad relay?
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From: Nutter Fort, WV
If you are testing between the threads on the glow plug and the electrical connector on the glow plug, and it shows open, replace those glow plugs.
1.5 ohms is higher than normal, you are probably getting resistance from somewhere other than the glow plugs.
.5 to 1 ohm is ideal resistance
1.5 ohms is higher than normal, you are probably getting resistance from somewhere other than the glow plugs.
.5 to 1 ohm is ideal resistance