recondition or replace injectors?

[Russellc]

Is there any reason to remove, clean and recalibrate/repair/recondition BMW fuel injectors at 138,000 miles? Or is there a test to see if they are a problem without removing them?

From several past UOA I found a fuel dilution issue? Perhaps an injector is leaking after shutdown?? Not sure how to approach this issue.

Replacement seems to be overkill at over $100 each new. Fiveo suggested the following. At this point I have not idea about their price or quality of work. Thanks

"Russell - I have reconditioned Bosch orginal equipment fuel injectors for your 95 525i.

Price is $259.50 plus $60 refundable core deposit.

Usually a simple cleaning is not recommended. The most common problems with the old parts are the coils breaking down or the seperation of the body parts that lets some fuel start to leak.

Bruce Holt,
Owner-Fiveomotorsport"

[Dr. Frank]

I had my injectors off the manifold while replaceing gaskets. I sent them in to a diesel injector service company. Provided me with pre and post cleaning flow numbers. One day turn around and 180 usd. Worth the cost in my opinion.

[4500 RPM]

Not sure but that just remined me to pick up some Techron...

[atl530i]

I had my injectors off the manifold while replaceing gaskets. I sent them in to a diesel injector service company. Provided me with pre and post cleaning flow numbers. One day turn around and 180 usd. Worth the cost in my opinion.

I would do something like the good Doc did. How did they come out?

[2DYE4]

it's cheaper to have them reconditioned and flow tested, you can get a nice read out of before and after, they are pretty detailed.

Ive been thinking of doing this sometime soon, too. Keep us posted.

[atl530i]

it's cheaper to have them reconditioned and flow tested, you can get a nice read out of before and after, they are pretty detailed.

Ive been thinking of doing this sometime soon, too. Keep us posted.

+1 Post some before and after results Doc.

[Whackamac]

Go down to Kragen, Schucks, etc, and get yourself a can of Berryman's. Put it in your tank before you fill up. It is the best damn cleaner I have ever used IMO... I have had most excellent results in every older car I have owned.

You can put a can of it in your oil and run it for 15 min before you change it too and it will remove a lot of the engine gunk before you drain it out.

[Arianboy]

I ran that "Slick 50" fuel system cleaner through my car. It definately get the impression that it cleaned things out. On the down side, not sure if it's related or not, my intake gaskets split/seperated and I started sucking oil. Looked like a batmobile smokescreen!

[Whackamac]

ewwww. slick 50.... I remember that stuff.

My dad was with GM for over 30 years, they did tests with all those special fluids and found that the slick stuff and others removed too much friction causing wear in other areas and possibly the well hated piston slap.