Replacing Bad Glow Plugs
Thread Starter
|
New User
Joined: Jan 2009
Posts: 10
Likes: 0
Replacing Bad Glow Plugs
I have tested the GP Relay and all the GP'S on my 1991 F-250 7.3 IDI and determined my hard cold starting problem is 7 bad GP'S. On researching what it takes to change them out I have found that OTC makes a tool #6005A to assist in pulling stuck GP'S. Has anyone used this tool and does it work as advertised? I am really trying to avoid the expense of pulling the heads because of a GP tip breaking off in the Heads. I have heard what an Expensive Nightmare this can be, Honestly though is it that common of a problem? I bought the Truck used and have no idea what service or repairs have been done to it in the past. It is a very strong runner though. 
Any help or thought on this will be greatly appreciated.
Any help or thought on this will be greatly appreciated.
Clueless spectator!
Joined: Aug 2010
Posts: 1,587
Likes: 6
From: Denver, CO
I have pulled GP's from three different motors numerous times times without any special tools, and never broken one off or had a swelled plug including Autolite, Wellman, Bosch,and of course Motorcraft. You can hit them with a little PB blaster before removal, and use compressed air to clean the threads afterwards and just go gently. A good variety of deep sockets, extensions, wobble extensions and universals goes a long ways here, especially if you have a turbo to deal with.
Good luck,
Mac.
P.S. before I get SH&% for it, Both my trucks run only Motorcraft ZD-9s now the other brands were from PO's. I still had to get them out!
Good luck,
Mac.
P.S. before I get SH&% for it, Both my trucks run only Motorcraft ZD-9s now the other brands were from PO's. I still had to get them out!
Junior User
Joined: Sep 2011
Posts: 90
Likes: 0
I would recommend a 1/4 inch ratchet and a deep socket, there are only a few glow plugs that are a little hard to get at. I removed a broken tip autolite gp from my truck when I bought it and it still runs about the same as when I got it
Posting Guru
Joined: Jan 2001
Posts: 1,101
Likes: 2
From: Poway, CA
Mike
Thread Starter
|
New User
Joined: Jan 2009
Posts: 10
Likes: 0
I have pulled GP's from three different motors numerous times times without any special tools, and never broken one off or had a swelled plug including Autolite, Wellman, Bosch,and of course Motorcraft. You can hit them with a little PB blaster before removal, and use compressed air to clean the threads afterwards and just go gently. A good variety of deep sockets, extensions, wobble extensions and universals goes a long ways here, especially if you have a turbo to deal with.
Good luck,
Mac.
P.S. before I get SH&% for it, Both my trucks run only Motorcraft ZD-9s now the other brands were from PO's. I still had to get them out!
Good luck,
Mac.
P.S. before I get SH&% for it, Both my trucks run only Motorcraft ZD-9s now the other brands were from PO's. I still had to get them out!
Trending Topics
i ain't rite
Joined: Mar 2005
Posts: 65,511
Likes: 5,567
From: Marlboro Mental Hospital.
well, "heat up twice as fast at the tip where it is needed" to me that means swelling tip. i will stick with the motorcraft. they are cheaper, and are what is recommended by ford and international for our engines.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Postmaster
Joined: Feb 2011
Posts: 3,560
Likes: 1
i've heard several times around here about such claims being shown to be the failure of the plugs claiming it. the plug material is only stable to a given temp, and anything above that makes it prone to failure. thats why the motorcraft plug is designed to heat evenly, and doesn't tend to have problems, while these aftermarket plugs have a long reputation for problems.
with motorcraft plugs, my engine start first cylinder up every time, what more can a man ask for
with motorcraft plugs, my engine start first cylinder up every time, what more can a man ask for
Cargo Master
Joined: Oct 2008
Posts: 3,330
Likes: 13
From: Eaton, CO
Have a GP with you when you get the socket. Many wont be deep enough. ZD9's at Rock Auto. If one is swelled, I've heard of guys using a small cats paw type of tool and an electric drill. The tip will grind down and permit extraction. I was worried when doing mine, but no issues. All **** plugs too.
Thread
Thread Starter
Forum
Replies
Last Post
boots6868
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
8
Mar 19, 2010 02:06 AM
Ed in Maine
1999 - 2003 7.3L Power Stroke Diesel
7
May 25, 2007 07:28 AM
Fatshot
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
8
Mar 23, 2004 10:59 AM