Rough cold starts with glow plugs working
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Cargo Master
Joined: Sep 2015
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Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
I forgot to mention about shimming..
Only good for do-in-place,if injector is pulled it needs to be rebuild or swapped..
Too many people pulls injectors and replaces only external orings,total waste of time..
Here is a buzz test, where cylinder 1# has an loose injector armature screw:
Only good for do-in-place,if injector is pulled it needs to be rebuild or swapped..
Too many people pulls injectors and replaces only external orings,total waste of time..
Here is a buzz test, where cylinder 1# has an loose injector armature screw:
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Cargo Master
Joined: Sep 2015
Posts: 2,857
Likes: 365
Your cylinder one sounds like my cylinder four kind of a weak buzz. You're just referring to the four small screws ( going off of memory) on top of the injector? I've never heard of those coming loose might be something to check
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Jason, your issue sounds like mine when I bought the truck. I had 351K, truck would barely catch at 50*, bought it in the Fall, The next day Id get it to start at 28° but it sounded like an old tractor until the oil warmed up. We were pretty sure that the poppets were worn... I ended up buying a set from Rosewood (rebuilt)… when we pulled the injectors six of the eight were original. Ever since then the truck has started not plugged in, to date the lowest I’ve tried was -7. It’s not happy about it, it’ll **** and moan for a few seconds and then go to a nice idle.
I just briefly skimmed through the post. I would definitely try 5W/40, the truck seems to start even better since I switched to the Triax 5w/40 from the T6...and if it’s convenient plug your truck in on a timer at night.
I just briefly skimmed through the post. I would definitely try 5W/40, the truck seems to start even better since I switched to the Triax 5w/40 from the T6...and if it’s convenient plug your truck in on a timer at night.
Former Vendor
Joined: Sep 2020
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From: Florence, MT
I use a WiFi switch that records kwh and can be programed for any day(s). Alexa can also turn on the block heater 
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Cargo Master
Joined: Mar 2019
Posts: 2,907
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From: Kinnula,Finland
My Google research indicates that poppet valve screw breaks more often than loosens up..
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Cargo Master
Joined: Sep 2015
Posts: 2,857
Likes: 365
Jason, your issue sounds like mine when I bought the truck. I had 351K, truck would barely catch at 50*, bought it in the Fall, The next day Id get it to start at 28° but it sounded like an old tractor until the oil warmed up. We were pretty sure that the poppets were worn... I ended up buying a set from Rosewood (rebuilt)… when we pulled the injectors six of the eight were original. Ever since then the truck has started not plugged in, to date the lowest I’ve tried was -7. It’s not happy about it, it’ll **** and moan for a few seconds and then go to a nice idle.
I just briefly skimmed through the post. I would definitely try 5W/40, the truck seems to start even better since I switched to the Triax 5w/40 from the T6...and if it’s convenient plug your truck in on a timer at night.
I just briefly skimmed through the post. I would definitely try 5W/40, the truck seems to start even better since I switched to the Triax 5w/40 from the T6...and if it’s convenient plug your truck in on a timer at night.
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Cargo Master
Joined: Sep 2015
Posts: 2,857
Likes: 365
Thanks for all the replies guys 👍. I did a buzz test this morning and injectors four and eight sounded weak but when I did the buzz test yesterday when the engine was hot only injector 4 sounded weak. Is the IDM to blame for this or maybe the wiring from the IDM to the injectors? Thought it was odd that the electrical wasn't working on injector 8 when the engine is cold
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Thanks John, I'm in Florida and just change the injectors about 4 years ago so a little disappointed they haven't lasted very long. I do like the timer idea, thanks🤘. I will try some synthetic oil and see if that helps, being that I'm in Florida and it doesn't get very cold should I just stick with 15w40 synthetic?
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Cargo Master
Joined: Sep 2015
Posts: 2,857
Likes: 365
Ok thanks Bitterroot, so I guess my options are try synthetic oil or replace? Man these trucks drain my wallet🙄🙄😬😬😬😬😬😬