Well I'm not an expert like you(no disrespect intended)I just figured the rough running could be stiction and the code related to something else so figured the additives would be cheap and harmless to try before throwing big money at it.

 

Most 6.0 owners are at one point or another lol. Forged in fire

 

See post #7 (and #6 and #12). How much does testing continuity cost? A buzz test? The FREE continuity testing is for high and low circuit codes. No disrespect to you either, but you mentioned big money. The free electrical testing was mentioned before anyone mentioned anything about spending money - even on additives (and Archoil is not exactly cheap).

Contribution codes are another matter. Specific codes, specific troubleshooting techniques.
Additives may help, and can even be preventative, but there is no indication at this point that there is an issue on the oil side. Still it does not hurt to try, but to (apparently anyway) ignore electrical testing recommendations is not the best decision.

Fuel pressure is critical and measuring it may identify an underlying problem that could impact all injectors. If fuel pressure is low, then maybe replace all injectors on that side because they may have had a hard life. Even so, low fuel pressure will NOT cause a high circuit code. As a whole though, the 2007 injectors received all the upgrades and 165k miles is NOT much. That said - do the tests to know for sure what the issue is. Who knows - it MAY EVEN BE THE FICM.

Certainly he may have other issues, but the code he has is specific. It is better to test methodically than random shotgun approach.
He has only a #8 electrical code (as far as we know). Address that first; again - it is FREE.

https://www.ford-trucks.com/forums/1...cuit-high.html


Clearly the advice from his mechanic, and from all his research ..... is all over the map. One needs to weed through the possibilities in a prioritized manner, guided by codes and test results.

EDIT - here is an older thread where P0283 was indeed the FICM (it CAN happen despite what the mechanic said), just not very likely ......

https://www.ford-trucks.com/forums/1...-injector.html

 

Hartwig has been busy, but he did respond to me in a PM. He has not had dealings with Injectors Direct. Maybe someone else you were thinking of?
Hartwig DID have a very appropriate warning against cheap injectors, having seen a number of issues with his customer's engines and cheap injectors.

 

Be sure to replace the wires going to the fuel injector solenoids as well. If you got 165,000 miles on the factory injectors you are very lucky.

 

Why is it so hard to find good quality, reliable parts now a days?

 

Blub, blub, blub. You guys are my snorkel.

 

Mark, here's some of my conversation with a guy in Europe. Considering I don't know the other message pathway between him and Hartwig, it may be something other than what was said in my PM trail. God only knows. I don't follow all of Hartwig's postings, trials, and tribulations.

I've never bought from Injectors Direct, so I bailed out of the conversation. I thought the two versions I noted (of the four) were good and didn't want to lead him down a bad path.

 

Hello gentlemen,
the mentioned guy is from Eastern Europe (I think he said Georgia). He had written to me about the injectors. He wants to get a 6.0 Excursion running and then sell it as quickly as possible. I suspect it's a car dealer who just wants to make a profit with the Ex. We all know the "special features" of these engines, if you want a reliable 6.0, some components have to work flawlessly.

I recently wrote about this truck:

https://www.ford-trucks.com/forums/1...i-engines.html

Here too, cheap aftermarket parts (including injectors) were installed, and to make matters worse, the mechanic was obviously a butcher or baker rather than a truck mechanic.

I had advised the guy mentioned above to only install top quality injectors, otherwise there will be problems. Sometimes it's also the case that with some people advice doesn't make sense because they don't want to listen (change the oil and check the fuel pressure BEFORE changing the injector, etc.). I also had this impression in this case.

Another problem here in Germany is the high shipping costs and import taxes. I ordered new calipers for the black truck I linked to above. The shipping costs alone is more expensive than the calipers themselves. That's why we have such high prices here. The return shipment of core parts is also unprofitable, which is why the core costs have to be charged (the same applies to injectors).

The guy never got back to me after that. I myself have no experience with Injectors Direct, so unfortunately I can't make any statements.

 

Thanks for clearing it up Hartwig. Sorry to "put you on the spot", but we all respect and value your perspective!

Jack - I also appreciate your caution.

 

Hartwig,

Somewhere, things got crossed then, based on his comment to me when I recommended those two versions from Injectors Direct and you supposedly saying they were junk.

I haven't heard back from him, either. I didn't take him for a car dealer, though, but our conversations with him could have been different.

 

Update:
I downloaded Forscan Lite onto my iPad and bought one of the OBD2 connectors recommended by Forscan. I did the buzz test, aka Injector Electrical Self Test. One big buzz of all injectors, followed by 7 individual clicks then a pause. It also confirmed the code I've been getting, P0283 (Injector #8 hi voltage). I also got P0284 (Cylinder #8 contribution/balance).

FICM voltage seemed to be fluctuating between 47.5 and 48.

I purchased a fuel pressure gauge and blue spring kit, which I haven't installed yet but will.

Currently the truck is at a different local shop that services diesels. I gave their mechanic the injector harness continuity specs shared in this thread by Bismic (thank you) and asked him to do this check. He says he did and it shows the problem is not just electrical connections but the injector. He is not insisting on replacing all 8 injectors, but does recommend replacing all 4 injectors on the side with the bad one, and I have agreed. His estimate was less than half of what the other shop wanted to replace all 8, and I feel like this guy is much more willing to communicate.

 

Sounds like you are on the right track. Glad to hear it.

 

Good on you for rolling your sleeves up and getting in there yourself, if just to buzz test and read codes.

You going with OEM stock sticks or aftermarket? There's lot's of people having to redo injectors 2000-20,000 miles after install so not sure what brand is the most reliable anymore, but wishing you luck man

 

Belated update: I took the truck to Adam, a local mechanic with a lot of diesel experience. He replaced the four injectors on the driver's side. It's been about 6 weeks, so far so good. Thanks much for all the education and advice.

Now I have another kinda dumb question, but I will start another thread.