How-To - Clean Fuel Injectors On The Bench

[2bfast]

With a few posts I have seen about buying used injectors and having an experience myself I thought I would make a HOW-TO thread on cleaning fuel injectors that have been sitting for awhile off the vehicle.

 

A lot of times modding your vehicle with it being a car or truck will lead to have to upgrade your fuel injectors for proper fueling. You will find every now and then a for sale thread on used 44lb delphi injectors or other types for LS applications. Picking these units up for half the cost of buying new is a plus, but can be questionable at the same time.

 

As most of you know, gasoline goes bad the longer it sets. When you take an injector with all the small workings inside and let it set after being used it will gum up and possibly stick. Thefore when you install these used injectors you take a risk of one or more sticking causing dead cylinders upon start up.

 

With all that said I will take the time to show a quick and easy way to lube and free up possible stuck injectors before installation to prevent this situation.

 

I am using a set of factory delphi injectors that arent modified for the demonstration. These were my factory injectors from my truck with 38k miles on them. They were removed in 2009 and havnt been out of the ziploc bag until now. Thefore these would be good canidates for demonstration.

 

 

I am using a regulated DC power supply from a friend of mine. To be honest, this was the idea of a good friend of mine and a member on this forum (shadetree) and I am passing this on to you. From what he said, you can find these cheap at Radioshack, ect.

 

 

You can use any test leads but I am using double aligator clip ones. I used these mainly for ease of demonstration. You can pick these up at radio shack as well.

 

 

I am using carb/choke cleaner from o o o o reillys. Seemed to work fine. You can use straight gasoline as an alternative if you like.

 

 

Fill the top of the injector with whatever lube/cleaner you choose

 

 

Hook up your test leads to your power source and to the terminals on in the injector. Use one of them to touch the other terminal and pulse the cleaner through the injector cleaning it. Try not to hold it to long but just pulse. You might have to do this several times

 

 

Here is the results of an injector sitting for almost 3 years and what came out of it

 

 

 

Please note, most 44lb and up wont be sitting for this long. But even buying a set sitting for a month wouldnt hurt this treatment before install. Its easier to this than having to remove the fuel rail and remove the injector everytime.

 

Again, to some this is novice information but to guys on a tight budget buying used injectors this is something I would look towards doing

 

Happy modding

 

(mods are welcome to make this a sticky)

Edited February 19, 2012 by 2BFAST (see edit history)

[shawnss]

Wow thanks nice little write up. this is something you would never think of but yet seem's quite easy to do. look's like the injector's where quite dirty. Thanks for sharing !!!

[kissfans03ss]

Thanks for taking the time to do a write up and passing some good info along.

 

Sent from my DROID BIONIC using Tapatalk

[Silverad0 SS]

Thanks I'll be doing this soon!

[Miller812]

I would have never thought of doing that. Great write up. thanks for sharing it

 

Sent From My GNex

[kevinthegreat]

Not a bad write up Brian. Nice work

[feece08]

Nice little write up Brian. Noted...

[Chadz]

[Ricky5298]

Nice write up

[IndySilveradoSS]

you  can also take a turkey injector, fit a piece of hose over it and the top of the and cycle the injector and push fluid through that way also..Removes more of the junk inside