Stumped
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Junior User
Joined: Jun 2006
Posts: 97
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From: New Jersey
Stumped
OK monday night driving home from store, get to light and truck begins to run rough. Almost died, then limped it home. Changed fuel filters on tuesday and then truck was still runnin rough. talked to diesel mechanic at work he seems to think it is a bad injector because the smoke is diesel (unburnt) so tommorow I am going to try to find a way to get it scanned without driving it anywhere and see. Anyone had a similar situation??????
Lead Driver
Joined: Mar 2010
Posts: 5,504
Likes: 256
From: Woodbridge, Ontario, CA
I'm inclined to believe the diesel tech's diagnosis that you have bad injector(s). If one or more is dumping raw fuel into the cylinder(s), that can't be good for the piston(s), never mind the fuel pressure drop. That said, you would be well advised to address this issue sooner than later.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
OK monday night driving home from store, get to light and truck begins to run rough. Almost died, then limped it home. Changed fuel filters on tuesday and then truck was still runnin rough. talked to diesel mechanic at work he seems to think it is a bad injector because the smoke is diesel (unburnt) so tommorow I am going to try to find a way to get it scanned without driving it anywhere and see. Anyone had a similar situation??????
Did the truck feel like it was missing? Riding rough is not the same thing as a truck(or any vehicle) having a miss.
You didn't mention the color of the smoke. An EGR issue can make it smoke as well. Smoke to me always signifies an incomplete burn, so you are going to get a raw diesel smell out of either one, however, with a leaking injector that smell will be "off the charts", but you would get that smell out of both.
If it's injectors, you'll more then likely get a cylinder contribution/balance error type code. If it's EGR, it'll more then likely be an EGR Range/Performance code.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
I've had one go bad and not a single tick mark drop in Fuel PSI. I had my gauge tested to make sure it wasn't the gauge and it wasn't the gauge, because I was(like you mentioned) figureing that there would be a fuel PSI drop, but it didn't register on the gauge. Either it was too small enough to register or it didn't happen.
Fleet Owner
Joined: Nov 2003
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I've had one go bad and not a single tick mark drop in Fuel PSI. I had my gauge tested to make sure it wasn't the gauge and it wasn't the gauge, because I was(like you mentioned) figureing that there would be a fuel PSI drop, but it didn't register on the gauge. Either it was too small enough to register or it didn't happen.
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Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
As I understand it, it will affect the farthest cylinder pressure first. It may not be all that noticeable at the filter (it depends on where the most significant pressure drop in the system is). Your pressures may not have been affected because it may not have been bad enough (or you have aftermarket fuel supply system - I can't recall), but it is well documented that if it is bad enough, it can "rob" fuel supply AND pressure from the downstream injectors and cause them to fail.
My PSI is taking at the regulator. Although I do have the option of taking it at the pump as there is already a ready made tap for the an a/m gauge at the pump.
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Junior User
Joined: Jun 2006
Posts: 97
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From: New Jersey
can anyone give me a ball park cost of injectors, EGR VAlve, EGR cooler..and oil cooler.
I was quoted:
EGR 287.00
Injector 265.00
this was from an international dealer in NJ
I have called a close friend who is going to come over and scan my truck this afternoon and I will know for sure what it is I pray to god it isn't bad.
Cleaned EGR and replaced gaskets Tuesday took it out yesterday and it was covered again I think one of the culprits is it will not operate correctly.
I was quoted:
EGR 287.00
Injector 265.00
this was from an international dealer in NJ
I have called a close friend who is going to come over and scan my truck this afternoon and I will know for sure what it is I pray to god it isn't bad.
Cleaned EGR and replaced gaskets Tuesday took it out yesterday and it was covered again I think one of the culprits is it will not operate correctly.
Lead Driver
Joined: Mar 2010
Posts: 5,504
Likes: 256
From: Woodbridge, Ontario, CA
EGR Cooler: 4C3Z-9P456-AF $351.19US
Oil Cooler: 3C3Z-6A642-AA $505.34US for a whole cooler (3C3Z-6A642-CA for just the kit, for $215.82US)
Screen Under Oil Cooler: 3C3Z-6C683-AB $7.39US
Injector: CN-5019-RM $401.28US - $180.00US core charge
https://www.tituswillfordparts.com/cart/?pn=CN-5019-rm
Tuned
Joined: Aug 2008
Posts: 301
Likes: 3
Just a note, my last oil cooler had the screen included in the kit. The kit was dated June 2010 (I think) Anyway, you can see it in the bag of o-rings.
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