I'm going to Take my injectors off the rail i think to give them a good cleaning.
What is everything I'll need to get the job done right? I Have stock 24# injectors.

I've herad using carb cleaner is good (spray bottles?) Or soaking them in injector cleaning stuff.. Any suggestions on what the best thing to do is? All the Carb cleaners i've seen appear in spray form (or maybe i havent looked enough?) Anyhow, any help would really be appreciated. (Should I get new O rings?)

 

I was about to ask that same question...

 

You can send them here.

www.witchhunter.com

They do flow testing and cleaning. My buddy (mystic95z) sent his injectors there. Came back as good as new.

 

Get them done right (see above post). There is no shortcut to cleaning them, and no good way to do it yourself. I'd avoid harsh solvents.

 

Unfortunatly I cant afford any downtime (well more than a day). Plus I'm out in Canada so that complicates things more... I have a slight stumble around 60mph under light throttle (have been trying to fix it for years). I've narrowed it down to injectors, O2's (Replaced them once with bosches though), MAF, and the opti... Injectors are next on my list lol. So i figure might as well clean them best as i can, if it doesnt work too well at least i'll still have my car and can order in some SVO's. I live on my own and drive to work n' school every day =/

So, any opinions on what the best method would be to do the cleaning if you had to?

 

I'd say send them to Rich. http://cruzinperformance.com/fuelinj.html (step by step procedure of what they do) He's very good and sends you info on each injector by email the sencd they are done. Before and after flows, cleans, flows agains, and cleans again if neccesary. Then he sends you the results via email. He also replaces your orings, seals, pintle caps and such. And the coolest part is they silicon bead blast you injectors and repaint them. There is no possible way for you to clean as good as injector cleaners can. They flow match them within 1% which is excellent. You said you cant afford any downtime, so i would say just buy a new set of injectors or a used set and send them out to be flow tested. I wouldnt bother with otherwise. Just run some "guaranteed to pass emmissions" stuff, you can get it at autozone, pep boys, advanced auto, or some denatured alcohol from Lowes.

 

Heres the step by step injector cleaning link.

http://cruzinperformance.com/injsteps.html

 

I just cleaned my injectors...and I'm satisfied with the results. Mine were pretty dirty so I found out... I used a mixture or STP throttle & carb cleaner... mixed with some of Marvel's mystery oil. I let the tips of the injectors sit over night... allot of grime and gunk was left in the cup afterwards... I took a tissue and wiped the rest of the gunk out the injectors... they came out squeaky clean afterwards... nice to know
I got the gunk off. After I put them back on the car I could instantly feel a difference...I also threw in some Lucas Injector cleaner... That finished everything off very nicely... After I threw that in a felt a stumble then a bang... then after that everything was awsome. I ran the car up to 120 on the free way... Throttle never felt so good. I'm on a budget too gotta do what you can.

-Heat-

 

Some qtips and carb cleaner is what i've heard works for the do it at home person.

 

I've heard people just soaking the injectors in carb cleaner and then replacing the o-rings, this maybe be most effective with Chem-dip too, thats satrong stuff, possible too strong ,not quite sure...you could also use seafoam! Put like 1/2 in the oil and the other half in the gas tank, or something like that, but i agree with those who just suggest to send them out and have them profesionally cleaned up etc. but seafoam probnably would suffice for a while.

Good luck!

 

Well just finished cleaning the injectors. Wasn't anything too hard to do, but kinda just a pain to put them all back on if you leave the rail in the car.

The injector tips were were crud covered but i think much of the crud came from pulling them out of their holes (lots of gunk collected down there, couldnt get it all out with carb cleaner and compressed air). As for the little holes for the fuel to spray out of, they all appeared clean of any deposits. It didnt seem all that bad actually, I did have my injectors recently services so perhaps that helps. I can see how getting them professionally cleaned is well worth it, as most of the "injector" is on the inside where you cant really get at even when soaking them (since theyre "closed" on the inside). Soaking them helped a little but carb cleanear seemed to have done most of the job. You can also see a bit of the filter when looking at them from the top. The filter appeared clean to me.

I still have yet to check out if there is any luck in solving my weird power loss at low rpm's....

 

I'll vouch for witchhunter. Awesome pricing for cleaning and flowing. Last year when I was having trouble passing emissions a local shop said I needed new injectors at a cost of over $500. I sent my injectors off to witchhunter and they all cleaned up except for one and payed $120 for the cleaning and a used injector that flow matched my others.

-Tony

 

As mentioned earlier the do-it-yourself method has a few drawbacks.

Professional shops clean injectors while pulsing them on and off in an ultrasonic cleaner. The force of the ultrasound and pulsing forces any particles up and out of the injector as the filter screens have been removed first. They are then back flushed to remove anything still left inside.
We use a slightly aklaline cleaning solution and depend on the ultrasonic action to do most of the work. Some injectors have the coil windings that cooled by the fuel during operation. Harsh chemicals degrade the wire insulation and can cause them to sooner.
Injector cleaning machines allow the tech to observe the spray pattern and verify the injector doesn't leak. Not to mention the ability to measure /check the injector in both static and dynamic operation.

If you try the do-it-yourself method, go easy on the harsh chemicals.

If and when you need to find out what your injectors are really doing, consider an injector shop. There are a few good one's out there.


Gordon
WitchHunter Performance