7.3 idi won't start
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1st Gear
Joined: Feb 2023
Posts: 1
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7.3 idi won't start
I have a 1992 7.3 idi and I've had for 3 months and it won't start at all I've been using starting fluid for awhile since my glow plugs relay switch is bad but I'll spray the filter and it will crank crank and crank but won't start it kinda did this to me last night but it actually ended up starting I am extremely confused on what's going on it's had no issues until now.
Fleet Mechanic
Joined: Sep 2016
Posts: 1,519
Likes: 224
From: Nevada
Sounds like some or all your Glow plugs are not working.
Or maybe a problem with the GP Controller.
To test the Gp`s, remove each wire connected to them. Use one of those
test lights that looks like an Ice pick. Connect the Alligator Clip to 12V, then
put the pokie end to the tip of each GP. The light turns on, they are good.
Another way is to Ohm them. Think they should be less than 5 Ohms.
Ether is not the best thing to use to start the engines.
You can shove a Harbor Freight heat Gun down the intake, and that will start them.
Be sue to remove the element, or you might have plenty of fire and heat to start it.
Got me excited one time when I forgot to remove it.
Charlie
Or maybe a problem with the GP Controller.
To test the Gp`s, remove each wire connected to them. Use one of those
test lights that looks like an Ice pick. Connect the Alligator Clip to 12V, then
put the pokie end to the tip of each GP. The light turns on, they are good.
Another way is to Ohm them. Think they should be less than 5 Ohms.
Ether is not the best thing to use to start the engines.
You can shove a Harbor Freight heat Gun down the intake, and that will start them.
Be sue to remove the element, or you might have plenty of fire and heat to start it.
Got me excited one time when I forgot to remove it.
Charlie
Logistics Pro
Joined: Jun 2017
Posts: 3,963
Likes: 512
From: Edmond, OK
Use a clear acrylic fuel hose between the fuel pump and fuel filter to check for bubbles in the fuel. You can even move the clear acrylic hose between the tank/FSV, FSV/fuel pump, and fuel filter/IP to ID where your air intrusion is coming from.
5th Gear
Joined: Jan 2023
Posts: 5
Likes: 2
Sounds like some or all your Glow plugs are not working.
Or maybe a problem with the GP Controller.
To test the Gp`s, remove each wire connected to them. Use one of those
test lights that looks like an Ice pick. Connect the Alligator Clip to 12V, then
put the pokie end to the tip of each GP. The light turns on, they are good.
Another way is to Ohm them. Think they should be less than 5 Ohms.
Ether is not the best thing to use to start the engines.
You can shove a Harbor Freight heat Gun down the intake, and that will start them.
Be sue to remove the element, or you might have plenty of fire and heat to start it.
Got me excited one time when I forgot to remove it.
Charlie
Or maybe a problem with the GP Controller.
To test the Gp`s, remove each wire connected to them. Use one of those
test lights that looks like an Ice pick. Connect the Alligator Clip to 12V, then
put the pokie end to the tip of each GP. The light turns on, they are good.
Another way is to Ohm them. Think they should be less than 5 Ohms.
Ether is not the best thing to use to start the engines.
You can shove a Harbor Freight heat Gun down the intake, and that will start them.
Be sue to remove the element, or you might have plenty of fire and heat to start it.
Got me excited one time when I forgot to remove it.
Charlie
Last edited by KSKARDLR; Feb 3, 2023 at 09:15 AM. Reason: accuracy
i ain't rite
Joined: Mar 2005
Posts: 65,507
Likes: 5,563
From: Marlboro Mental Hospital.
what brand glow plugs were put in?
my bet is autolite, and they burned out after first start.
or the glow plug controller is not connected.
firing rite up after 1 1/2 -2 hours plugged in is a sure fire sign the glow plugs are not working.
my bet is autolite, and they burned out after first start.
or the glow plug controller is not connected.
firing rite up after 1 1/2 -2 hours plugged in is a sure fire sign the glow plugs are not working.
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