I have a 91 RS v6. I have the fuel rail pulled off the car. Whats the best way to clean the injectors? Do I need replace the O rings If there's no visible damage?

 

i dont think you HAVE to but you might as well get new ones theyre very cheap and when reinstalling injectors use a small amount of vaseline or white lithium grease , it will help prevent damaging oring when reinstalling them...hope this is help ful ive done plenty of injectors and screwed up a few but not using any lubrication (like i said only a small amount to both orings being careful not to get any in your freshly cleaned injectors ) good luck!

 

Thanks, any recommendations on cleaning the injectors?

 

ive always set them in a coffe can with pb blaster in the bottom , injectors standing up, and spraying pb from the top...thats not the proper way to do it its kind of a thing ive done that seems to work...im not really sure of really how to do it,,i think advance or autozone has a kit to do it? maybe im not positive though or you can ask you mechanic/parts store if theyll do it, there is a guy in my town who does it for free and i stand by his work he uses and airline adapter and fills the top of the injector with solvent,lets it sit,then he hooks up the fitting to the top and it blows out the debris

 

The way the pros do it, is to remove the little screen filter in them, ultrasonically clean them, then force a cleaning solvent through them in reverse while holding them open electrically; then put a new filter in them.

http://cgi.ebay.com/ebaymotors/BOSCH...item3cb6664d4c This is what the parts look like. These are for Bosch injectors, and AFAIK won't fit Delco, but the principle is the same for both.

Can't imagine PB Blaster dissolving fuel varnish since I've never seen it do anything of the kind, but I could be surprised.

YOu can just soak them in lacquer thinner, MEK, or acetone, and that will do wonders for them even if not getting them completely immaculate.

 

all i can say is im glad a pro read this...my method doesnt really get out everything really just minor carbon deposits and maybe grease or oil....listen to what this guy is saying might as well do it right ^^

 

Ultrasonic cleaning is the best method but soaking in a strong cleaner will do wonders, just dint get it in the terminals and it shouldn't do any harm. Not replacing O-rings/seals on the other hand may not be such a good idea.

 

if you are just looking to clean up the "cosmetics" of the injectors, get yourself a bottle of simple green...dilute it with some water and let them soak overnight. The true way to clean and injector,, is to have them professionally cleaned and flowtested. All of these cleaners and additives including something like seafoam or techron work well, only problem is that you are not able to visualize the finished product....ie spray pattern. If you do not want to go that route, let me know and i will send you some orings.

 

Thanks for all the info, I just want get them good enough to start the car. Thanks

 

South bay is right on the money. Just so you know, my injector service charges $20 per injector. Cheap for knowing that your injectors flow correctly. Plus, you get brand new o-rings installed.

 

Thanks ASE doc,,, we charge $15 per injector, but $15-$20 is about the norm in the industry, with the exception of some that charge double that

 

Hey south bay,whats the best way to bench test the injectors ????

 

truthfully, the best way and the safest way to test them is on a flowbech. We would be more than happy to check them for you if you like.

www.southbayfuelinjectors.com
516-492-6504

 

Hey southbay08, I dropped the injectors in the mail. I'm not sure how long it will take for them to get to you. Thank You.

 

Ok, no problem. We will give you a call when they arrive.

 

I know this is an older post but I hope allot of people see this. I can not praise or thank the great people at South Bay Fuel Injectors enough. They went way above and beyond my expectations to help me with my fuel injectors. It is refreshing to see a company willing to look out for people. !!!! THANK YOU SOUTH BAY !!!!

 

you are so very welcome!

 

http://www.youtube.com/watch?v=7aT4S1lIBAY

i've been wanting to try this...

 

good luck