need some GP / GPR help
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Since this thread is already open, I'll jump in. Just ohmed mine out because of hard starts and 5 read between 1.0 and 1.4, 3 had no reading at all. Bad plugs or bad wire??? I know is smokes like smoke bomb in the morning. Two open readings on left side and one on right side. Ugg
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Unfortunately I don't think you will be able to determine that until you pull the VCs and once your that far might as well put in new GPs no matter the problem. UGG!
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Shouldn't I get some sort of reading on even a bad plug? 3 are showing completely open circuit. Two outside one on one side and one inside one on the other side. Sure makes 14 degree starts smokey
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
I know you guys like pics, me too, so here's a GP cut-a-way diagram.
This is not a ZD-11 but certainly typical of one.
This is not a ZD-11 but certainly typical of one.
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Thread Starter
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Mountain Pass
Joined: Jun 2010
Posts: 205
Likes: 3
ok so here we go.....i ohmed both side a minute ago to decide i would be better off drinking and cursing the truck then working on it. I have the back pin on the driver side ohmed 2.5 the other 3 pins hit .8 to 1.0. the relay tested good (once i figured out how to use that darn multimeter) and to top it all off when i looked at the driver side back pin it looked kinda funny, and when i say funny i mean bad. it was burnt and when the plug came off it left the metal contact on the pin. so now i know i need 1 gp and a new harness. am i correct or can it be salvaged.
the passanger side all read between .7 and .9
all the pins in both plugs looked tarnished. thanks FTE you have made my live alot easier this week.
the passanger side all read between .7 and .9
all the pins in both plugs looked tarnished. thanks FTE you have made my live alot easier this week.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Pass. side sounds good, the drivers side VC needs to come off and see what's under there. 2.5 is too high and the broken pin will have to be repaired and I don't think it can be salvaged.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Sounds like the best thing to do is to get a set of glow plugs, wiring harnesses, and a relay and install them.
While it's all apart, retorque the rocker arm pedastals and injector hold downs.
While it's all apart, retorque the rocker arm pedastals and injector hold downs.
Thread Starter
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Mountain Pass
Joined: Jun 2010
Posts: 205
Likes: 3
That's sounds good, what are the torque specs for all me that?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
20 foot pounds for the rocker arm pedastals.
10 foot pounds for the injector hold downs.
10 foot pounds for the injector hold downs.