Glow Plug problem?
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Junior User
Joined: Oct 2004
Posts: 93
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From: Oakley California
Glow Plug problem?
My 6.9 won't start easily anymore. My friend was using the truck and left the key on all night. Had to replace batteries, they were weak anyway. Now the engine is very hard to start and eventually starts and runs ok if I hold it at half throttle long enough to warm up.
Could he have smoked the glow plugs?
It used to start in seconds.
Where is the best place to purchase them? Online or at Napa?
Is it a hard job to replace them?
Could he have smoked the glow plugs?
It used to start in seconds.
Where is the best place to purchase them? Online or at Napa?
Is it a hard job to replace them?
Fleet Mechanic
Joined: Sep 2016
Posts: 1,519
Likes: 224
From: Nevada
If you need plugs, these are the cheapest I have seen for Motorcraft ZD-1 plugs.
Diesel Glow Plug MOTORCRAFT ZD1A E5TZ12A342B NEW OEM | eBay
$9.95 and free shipping. Shows he only had 8.
Most are in the $11 - $12 range.
Charlie
Diesel Glow Plug MOTORCRAFT ZD1A E5TZ12A342B NEW OEM | eBay
$9.95 and free shipping. Shows he only had 8.
Most are in the $11 - $12 range.
Charlie
i ain't rite
Joined: Mar 2005
Posts: 65,447
Likes: 5,517
From: Marlboro Mental Hospital.
if that ebay guy does not still have them, rockauto sells the ZD-1's for under 10 each also.
my bet is the glow plug controller is bad. with key in run on cold engine, use a test light and see if any power comes out of the controller to the glow plugs.
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Junior User
Joined: Oct 2004
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From: Oakley California
There are 2 there. ZD11 and ZD1A Which one?
Seller
icitylightsi (1375)
Request total from seller
Diesel Glow Plug MOTORCRAFT ZD1A E5TZ12A342B NEW OEM
Condition: New
Item price: $9.95
Quantity:
$79.60
Set of 8 Brand New OEM Genuine Motorcraft ZD-11 Glow Plugs F4TZ-12A342-BA !!
16 product ratings
vampkittykat (8224 )
100% Positive feedback
Price:
US $73.95
Buy It Now
Seller
icitylightsi (1375)
Request total from seller
Diesel Glow Plug MOTORCRAFT ZD1A E5TZ12A342B NEW OEM
Condition: New
Item price: $9.95
Quantity:
$79.60
Set of 8 Brand New OEM Genuine Motorcraft ZD-11 Glow Plugs F4TZ-12A342-BA !!
16 product ratings
vampkittykat (8224 )
100% Positive feedback
Price:
US $73.95
Buy It Now
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i ain't rite
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From: Marlboro Mental Hospital.
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Fleet Mechanic
Joined: Sep 2016
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From: Nevada
If you have the round end, then you have the ZD-9 plugs.
Those are used from 87 - 94 engines.
83 - 86 use the ZD-1 plugs. Not sure what the 1A is on the one`s I posted are or even make a difference.
The long list he has at the end shows all the vehicles they work on.
What type of GP controller does your engine have?
Charlie
i ain't rite
Joined: Mar 2005
Posts: 65,447
Likes: 5,517
From: Marlboro Mental Hospital.
bullet terminal is a ZD-9 plug, that is for the 7.3 IDI with solid state glow plug controller used after 87.
Thread Starter
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Junior User
Joined: Oct 2004
Posts: 93
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From: Oakley California
1987 F350 2WD 6.9 No mods.
I found the Motocraft glow plugs and installed them along with a new controller.
Starts good now but dies after about a minute. Once it is running it runs good but after sitting for an hour hard starting. I think there is an air leak somewhere.
Real strange when it was running and starting great before my friend left the key on overnight. Can't figure out how this could be related. I changed the fuel filter along the way. Could it be a bad fuel filter?
How would I check for air leaks in the system?
Thanks
I found the Motocraft glow plugs and installed them along with a new controller.
Starts good now but dies after about a minute. Once it is running it runs good but after sitting for an hour hard starting. I think there is an air leak somewhere.
Real strange when it was running and starting great before my friend left the key on overnight. Can't figure out how this could be related. I changed the fuel filter along the way. Could it be a bad fuel filter?
How would I check for air leaks in the system?
Thanks