Noobie GP Question
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Noobie GP Question
So as the cold mornings creep in my truck is taking longer and longer to start. I have replaced the GPR with a Stancor and seems to be getting the proper voltage.
Tested the GPs themselves and 6 of them were around 2 ohms the other 2 were around .4 ohms.
Would this be the cause of my truck taking longer to start?
If so should I replace just those 2 or all 8?
Also my check engine light comes on half the time when I start my truck, but it goes off when the GPR switches off.
Thank you very much an advance!
Tested the GPs themselves and 6 of them were around 2 ohms the other 2 were around .4 ohms.
Would this be the cause of my truck taking longer to start?
If so should I replace just those 2 or all 8?
Also my check engine light comes on half the time when I start my truck, but it goes off when the GPR switches off.
Thank you very much an advance!
i ain't rite
Joined: Mar 2005
Posts: 65,456
Likes: 5,526
From: Marlboro Mental Hospital.
i would change all 8 . motorcraft ZD-11 only.
$10.99 each from Amazon:
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
$10.99 each from Amazon:
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
Lead Driver
Joined: Mar 2006
Posts: 5,098
Likes: 1,504
From: western SD
How many miles on the truck? Original injectors? My brother has a Superduty he purchased with around 235K on the clock when purchased. At around 260K it got so it didn't want to start without being pluged in when the temps dropped to about 40 degrees. The glows and relay tested good, so I was at a loss. At 270 K it started making oil, so a set of good used injectors were installed, and that cured the hard starting under 40 degrees, and the oil making.
Master of Strokes
Joined: Mar 2007
Posts: 6,808
Likes: 25
From: CA
i would change all 8 . motorcraft ZD-11 only.
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
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New User
Joined: Apr 2013
Posts: 22
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i would change all 8 . motorcraft ZD-11 only.
$10.99 each from Amazon:
Amazon.com: Motorcraft ZD11 Glow Plug: Automotive
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
$10.99 each from Amazon:
Amazon.com: Motorcraft ZD11 Glow Plug: Automotive
$10.59 each from Clay at Riffraff diesel:
Motorcraft Glowplugs ZD-11 - Riffraff Diesel Performance
How many miles on the truck? Original injectors? My brother has a Superduty he purchased with around 235K on the clock when purchased. At around 260K it got so it didn't want to start without being pluged in when the temps dropped to about 40 degrees. The glows and relay tested good, so I was at a loss. At 270 K it started making oil, so a set of good used injectors were installed, and that cured the hard starting under 40 degrees, and the oil making.
Thank you all for your help so far!
i ain't rite
Joined: Mar 2005
Posts: 65,456
Likes: 5,526
From: Marlboro Mental Hospital.
with only 156K on the injectors they should still be good for at least another 50K miles as long as the truck was properly maintained.
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Lead Driver
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Do I need a new gasket for the valve covers?
I am not a mechanic by any means, just try to learn what I can from youtube
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New User
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Thanks for all your help!
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Update: replaced the GPs and it didn't fix the problem. However I found that 5 of them were not functioning and autolite brand... So glad I did it. After trying to start it a few times noticed my 8 year old batteries were only providing 10 - 6 volts to the starter. So I went out and replaced them.
Still not starting right. Slow to start but sounds great after it gets going. It also makes an odd deep rumble for about 5 seconds after starting. Not sure if that helps. 11 volts to the starter now.
Any thoughts?
Still not starting right. Slow to start but sounds great after it gets going. It also makes an odd deep rumble for about 5 seconds after starting. Not sure if that helps. 11 volts to the starter now.
Any thoughts?
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