glow plugs not working
Thread Starter
|
New User
Joined: Nov 2018
Posts: 3
Likes: 0
glow plugs not working
My son is in the Air Force and he got a 1994 7.3 turbo diesel truck, They changed everything they could since the truck had sat for a while, in changing the valve cover they didn't get the last bolt on tight and it severely leaked, so when they got to California after 2 months of severe leaking we changed the valve cover gasket, even though she was a beast to start before, she wouldn't start at all after the valve cover job, Yes the temp dropped from 74 outside to 50, now we have to have the block heater on for 1 hour and she will start, I hear the relay clicking when i turn the key but we checked one of the glow plugs and it isn't working, what is the easiest plan of attack.
i ain't rite
Joined: Mar 2005
Posts: 65,511
Likes: 5,567
From: Marlboro Mental Hospital.
did you check to see if the relay is any good? 90% of the time a no start condition is simply a bad relay, as long as the truck has the proper motorcraft ZD-11 glow plugs in it.
if someone put anything other than motorcraft ZD-11 plugs in it, than i will say the glow plugs are burned out and need to be changed again.
if someone put anything other than motorcraft ZD-11 plugs in it, than i will say the glow plugs are burned out and need to be changed again.
Thread Starter
|
New User
Joined: Nov 2018
Posts: 3
Likes: 0
did you check to see if the relay is any good? 90% of the time a no start condition is simply a bad relay, as long as the truck has the proper motorcraft ZD-11 glow plugs in it.
if someone put anything other than motorcraft ZD-11 plugs in it, than i will say the glow plugs are burned out and need to be changed again.
if someone put anything other than motorcraft ZD-11 plugs in it, than i will say the glow plugs are burned out and need to be changed again.
Fleet Owner
Joined: Aug 2004
Posts: 20,419
Likes: 197
From: AZ
Cheap glow plugs will swell in the head and you will not be able to get them out unless you pull the head. Under valve cover harness is not $500. After you hear the click measure across the glow plug relay (big wires) you should have near 12 volts for up to two minutes.
Lead Driver
Joined: Apr 2016
Posts: 7,206
Likes: 1,340
From: Bahstun
Lead Driver
Joined: Mar 2006
Posts: 5,105
Likes: 1,523
From: western SD
Have a read threw this thread
https://www.ford-trucks.com/forums/4...ke-thread.html You will find every thing you need to know about the GP system. As for the cheapest GPs, they have been known to burn out after just 1 or 2 cycles of the system. Use Motorcraft ZD11 plugs only
1
https://www.ford-trucks.com/forums/4...ke-thread.html You will find every thing you need to know about the GP system. As for the cheapest GPs, they have been known to burn out after just 1 or 2 cycles of the system. Use Motorcraft ZD11 plugs only
1
Lead Driver
Joined: Sep 2002
Posts: 9,540
Likes: 2,032
From: North Texas
This and fresh ZD11s. Clean up all your grounds while the batteries are disconnected. Are your batteries 850CCA or better?
Trending Topics
Thread Starter
|
New User
Joined: Nov 2018
Posts: 3
Likes: 0
Have a read threw this thread
https://www.ford-trucks.com/forums/4...ke-thread.html You will find every thing you need to know about the GP system. As for the cheapest GPs, they have been known to burn out after just 1 or 2 cycles of the system. Use Motorcraft ZD11 plugs only
1
https://www.ford-trucks.com/forums/4...ke-thread.html You will find every thing you need to know about the GP system. As for the cheapest GPs, they have been known to burn out after just 1 or 2 cycles of the system. Use Motorcraft ZD11 plugs only
1
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
Lead Driver
Joined: Mar 2006
Posts: 5,105
Likes: 1,523
From: western SD
When I first found these forums, I was using the 90 IDI as a daily driver, and I thought that "use Motorcraft/Beru plugs only" was a bunch of hype. I was replacing the glow plugs at least once a year on it. Then I lost the motor to cavitation, and replaced it with a Ford turboed drop in. And after a couple of years I realized that I hadn't had to replace any gps, so I looked at them. Sure enough They were Motorcraft, which are still in that truck.
Thread
Thread Starter
Forum
Replies
Last Post
tpolley
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
8
May 11, 2009 10:29 PM