white smoke?
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Elder User
Joined: Oct 2007
Posts: 935
Likes: 1
From: Bowling Green, KY
white smoke?
I started my 01 f250 7.3 this morning and there was white smoke pouring out the exhaust it was about 32 degrees outside and I forgot to plug I'd up last night. Is there something wrong with my truck
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Look on the valley side of each valve cover, and you'll see the valve cover harnesses that run underneath each cover. When you remove the plug, you'll see that each connector has 8 pins. The outer two pins on each side of the connector is for the glow plugs, the 4 middle are for the injectors:
UVC Harness connector
G - glow plug
I - Injector
|G|G|I|I|I|I|G|G|
Take a multimeter and OHM out each pin for the glow plugs. The black lead of your multimeter should be connected to a good ground, and probe the red lead into each of the glow plug pins. Good glow plugs read between .8 to 1.5 OHM's. Marginal glow plugs will be slightly higher than 1.5, but it you're reading much higher than that or to infinity then they need to be replaced.
UVC Harness connector
G - glow plug
I - Injector
|G|G|I|I|I|I|G|G|
Take a multimeter and OHM out each pin for the glow plugs. The black lead of your multimeter should be connected to a good ground, and probe the red lead into each of the glow plug pins. Good glow plugs read between .8 to 1.5 OHM's. Marginal glow plugs will be slightly higher than 1.5, but it you're reading much higher than that or to infinity then they need to be replaced.
Elder User
Joined: Aug 2006
Posts: 870
Likes: 0
From: Mountaintop, PA
Originally Posted by robs01f250
it was about 32 degrees outside and I forgot to plug I'd up last night.
It sounds like your truck has a failing Glow Plug Relay though. Do a search on here for hard starting or cold weather tips. This subject has been covered a million times. I've been doing cold start-ups without plugging in admist having my oil monitered, and all UOA have checked out great. Energy costs too high right now!
Senior User
Joined: Aug 2007
Posts: 321
Likes: 0
From: Albuquerque, New Mexico
Originally Posted by Pocket
Look on the valley side of each valve cover, and you'll see the valve cover harnesses that run underneath each cover. When you remove the plug, you'll see that each connector has 8 pins. The outer two pins on each side of the connector is for the glow plugs, the 4 middle are for the injectors:
UVC Harness connector
G - glow plug
I - Injector
|G|G|I|I|I|I|G|G|
Take a multimeter and OHM out each pin for the glow plugs. The black lead of your multimeter should be connected to a good ground, and probe the red lead into each of the glow plug pins. Good glow plugs read between .8 to 1.5 OHM's. Marginal glow plugs will be slightly higher than 1.5, but it you're reading much higher than that or to infinity then they need to be replaced.
UVC Harness connector
G - glow plug
I - Injector
|G|G|I|I|I|I|G|G|
Take a multimeter and OHM out each pin for the glow plugs. The black lead of your multimeter should be connected to a good ground, and probe the red lead into each of the glow plug pins. Good glow plugs read between .8 to 1.5 OHM's. Marginal glow plugs will be slightly higher than 1.5, but it you're reading much higher than that or to infinity then they need to be replaced.
(G) (G) (I) (I) (C) (I) (I) (G) (G)
G=Glow plugs
I=Injector
C=Common Ground
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Senior User
Joined: Oct 2005
Posts: 185
Likes: 0
From: Unfortunately Jeresy
I definitely agree with what everyone's saying i had a 95 7.3 went to start it one day and just crank and dumped white smoke (unburnt diesel) Scratched my head jumped the glow plug soleniod by fuel filter and she fired right up. easy repair and cause of problem. The next week i threw glow plugs in her too just so i wasn't stranded cause who knew how old they were and when they were ready to quit just like my solenoid. ohm your glow plugs or just say screw it and buy a rack they're not to to bad at least you know they're all new. good luck
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Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Originally Posted by WonderDonkey
Just forgot the ground, there is actully 9 pins
(G) (G) (I) (I) (C) (I) (I) (G) (G)
G=Glow plugs
I=Injector
C=Common Ground
(G) (G) (I) (I) (C) (I) (I) (G) (G)
G=Glow plugs
I=Injector
C=Common Ground
New User
Joined: Oct 2007
Posts: 16
Likes: 0
From: POLK COUNTY
that happen to me this morning also, truck has been parked for about 3 weeks havnt moved it till today decided to go fuel her up and after i fueld her up white smoke was comming out and then she lost power till she just shut down on me, come to be the damn filter was really REALLY dirty new filter and bam she fired right up and purred donw the street like a lion