can anyone tell me how to clean injectors? I've heard that the stuff that you pour into the gas tank doesn't really do the trick.

 

well i don't have any unltrasonic machines in my garage...only a couch and a table that i'm trying to get rid of.


any way that i can clean them? like take them out and use a pipe cleaner or something......j/k....seriously tho....any ideas

 

Just leave them in gasoline for a day, that should work unless there really ditry.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90blackcrx &raquo;</TD></TR><TR><TD CLASS="quote">Just leave them in gasoline for a day, that should work unless there really ditry.</TD></TR></TABLE>

Wont clean the insides, if you want to clean them at home it invovles, carb cleaner, a fuel line, a AA battery and an air compressor. There is a write up on it floating around somewhere, it works well, it solved the reason my B16 wouldn't start when I first swapped it.

 

I went back through my archived post and found the article:
http://www.plymouthlaser.com/injectest.htm

 

just fyi chevron techron is a FANTASTIC fuel injector cleaner...

Most suck but that one is VERY good... try that before you go blowing air through the injectors...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beta13 &raquo;</TD></TR><TR><TD CLASS="quote">

Wont clean the insides, if you want to clean them at home it invovles, carb cleaner, a fuel line, a AA battery and an air compressor. There is a write up on it floating around somewhere, it works well, it solved the reason my B16 wouldn't start when I first swapped it.</TD></TR></TABLE>

Yeah true, but if the insides are that dirty I would send them away to get them cleaned by a machine.

 

i'll try Chevron first.....my philosophy is to start with the cheapest/easiest way to fix the problem first, then work your way up until it gets fixed....i'll let you guys know....i'm trying to figure out if dirty injectors are why my car skips, causing the CEL 23 (knock sensor) to come on. I replaced the fuel pump and it felt better, but it didn't fix the problem.

 

To that write up, very detailed and descriptive.

Blaze

 

If you wanted to go all out, I sent a set of old injectors to RC Engineering to be cleaned and they came back as good as new. Cleaned internally and externally, new prehensal caps and a full "dyno" plot of their performance before and after service. It was under $100 to do all 4 and turnaround is 2 days.

RC

 

I sent mine out to a shop in Michigan.
Rich Jensen, the owner was very cool and turnaround was like one week. I chose him because his low price (like $68 total, shipped I think) and good words about him from other honda-tech'ers. I would recommend him as well.... here is what he wrote back to me with my injectors, aand you can still view the data from my 4 injectors in that link-

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rich Jensen &raquo;</TD></TR><TR><TD CLASS="quote">Hi Owen,
I have flow tested and cleaned your injectors. They cleaned up very nicely
and are all flowing within 2%.

You can view the results from the flow testing by clicking on the following
link or copy and paste it into your browser. This is a new program that I am
beta testing and working the "bugs" out of. Let me know if you have any
problems viewing it.

http://www.cruzinperformance.c...04144

I shipped the injectors back out on Wednesday. You should have them on
Monday. The tracking number is: xxxxxxxxxxxxxxxxxx (deleted by Owen)

Thanks again for your business. Let me know if you have any questions.
Rich Jensen
rich@cruzinperformance.com
</TD></TR></TABLE>

 

Well, i'm working on my car today, and i think i'm going to try to use this method
http://www.plymouthlaser.com/injectest.htm

i've heard good things about it, i don't have an air compressor, but i do have an air tank, hopefully i can make things work, i'll let you guys know what happens.

 

i just tried it...i couldn't get it to work...i don't know why...

What i'm using

Air tank....small, but it sprays air

old coolant hose....right size, and i pipe clamped it

AA battery with wires taped to it,

wires connected to fuel injector plug off of my old cx motor

My guess is that the injector isn't opening, cause nothing is spraying thru.

why wont it work for me...i'm going to check the writeup again.

 

tested AA battery....read 1.43V

used a bigger battery stronger reading

filled my air tank to 80 PSI

still not working AT ALL.....no fluid or air is coming thru...what am i doing wrong?

 

I'm gunna go ahead and guess that our injectors are triggered by a higher current... your best bet would be to prob the injector while it's running with a multimeter... find out what the voltage is...

Even then I don't know that you'll be able to simulate that voltage...

Good luck let us know what happens.

 

it was running badly, i think it was bad gas....but it's still giving me a knock sensor code......it runs fine when the ECU has been reset, but it always comes back on.

 

I work for one of the largest Injector mfg. in the world (a major motor sports sponsor.)I clean several sets of injectors each week for enthusiasts. If gasoline (or any off the shelf additive) would clean your injectors, they wouldn't have clogged to start with. The method some one mentioned with a sonic cleaner may work. The trick is to cycle them at high pressure (around 10 Bar.) You don't want to use gasoline as a properly funtioning injector will make a vapor bomb with it. You need a special calibration fluid with the same specific gravity as gasoline to do it safely and get accurate measurments when your done. It's not that difficult but you have to have the equipment. I usally get $12 per injector.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NonovUrbizniz &raquo;</TD></TR><TR><TD CLASS="quote">I'm gunna go ahead and guess that our injectors are triggered by a higher current... your best bet would be to prob the injector while it's running with a multimeter... find out what the voltage is...

Even then I don't know that you'll be able to simulate that voltage...

Good luck let us know what happens.</TD></TR></TABLE>
I'd check the circuit drawings in a Helm book first. I think the injectors are supplied with +12vdc all the time. The ECM closes the ground side of the circuit to fire the injectors. Because of the short duration of each injection pulse, you probably can't measure it properly with a DMM.

 

The injectors are powered by around 1.7volts, so the closest thing to that would be a AA battery with 1.5 volts. I am positive that this works, I've cleaned many sets of injectors using this method. I didn't do it exactly that site says I had to modify some stuff a little bit. Maybe I should make a write up or something.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beta13 &raquo;</TD></TR><TR><TD CLASS="quote"> Maybe I should make a write up or something.</TD></TR></TABLE>