Fuel Injectors

[RMaynard]

To all you diesel wizards, I have a question: When do the fuel injectors need servicing ?? I have a 2005 5. 9 Diesel with 86,000 on it. Thanx, Roger

 

[Wingate]

Unless you are having an issue such as hard starting, excessive smoking, fuel knock, fuel dilution... then there really isn't anything "serviceable" on the CR injector. I think the new dealeship sales gimick is to sell an "injector flush" ... . IMHO, thats a good way to flush some cash down the toilet. .

 

[HBarlow]

Yep, I agree with Wingate.

The short answer to the OP's question is never. Leave them alone until one or all of them need to be replaced.

 

[BigPapa]

Roger, in my experience, the vast majority of CR injectors I have seen replaced failed around 125-130K miles. The only "servicing" I would recommed is to use Stanadyne Lubricity Formula. I have had several customer's who have used this since the change to ULSD that have over 200K miles on their factory injectors.



Scott

 

[HBarlow]

I had over 200k miles on my '06, actually 230k when I sold it. It was still running good as new and had passed a cylinder contribution test with near equal cylinder/injector performance only a few thousand miles earlier. I never used a drop of fuel additive.

 

[RMaynard]

Thank you all for your words of wisdom, you have certainly answered my question, Roger