injector cleaning
 

Some1 said in the forum that you could clean injectors with carb cleaner and compressed air and pressing down on the injector niddle.. would this method work?

I just hooked up high flow carb cleaner to the feed line, then pulsed them with a 12 V battery. Still not as good as an ultrasonic cleaning though.

since injectors recieve a signal in pulses, is straight hooking up a battery to them straight going to damage them?

Dont be ghetto.. Have them cleaned and calibrated by a PRO. It is not even exspensive. If you do not have an account with RC Enginerring, you can send them to me and I will have them serviced for you. Topfeeds are $25.00 per injectors, sidefeeds are $29.00 per injector.

Most of the time I have sets here already cleaned and can simply swap out for you..

Low impedance injectors should never be hooked strait to the battery. If you car has a ressistor pack then you have low impedence injectors. You can test the injectors with an ohmmeter. 12-16Ω for high imp; 2.5-4Ω for low imp.

I said I "Pulsed" them. This indicates that I did not hook them straight.

You can hook any ohmic load to a battery. The resistor pack is to match the resistors to the drive circuit on the ECU.

PWNED

i may have to try that i'm pretty sure the injectors could use it.

Both these statements are true.

You CAN connect a low impedance injector directly to the battery for very short pulses without damage. However because a 3.5 Ohm resistor will draw 3.4A from a 12V source, you need to be careful not to hold the connection too long or you will burn up the injector (no cooling fuel flow).

To make it safe, you should put a low value power resistor (I use 10 Ohm 10W) in series to bring the current level down to a safe point.

its $15 per injector at witchhunter

Check around locally. I found a reputable turbo & diesel shop near me that cleaned mine for $12 each, and I had them back the same day. I asked a machine shop where to get it done, and they referred me there.

If everyone reads my FIRST POST, I clearly stated that I PULSE the injectors with a battery while injecting high pressure carb cleaner. In no way did I say to directly connect an injector (high or low), to a battery, and hold it static for any extended length of time.. I just tap one wire on to the battery terminal to simulate the opening and closing of the injecter.


Also, may I add, that if you drive an injector static (with an EMS of course) it has the same effect and will STILL burn out the injector.

So my original statement is 100% true. I can hook an injector up to a 12 V battery DIRECTLY, as long as I dont take it too far out of its operating specifications....

it is totally worth the 15 per injector that witchhunter does!!!

where do u buy high pressure carb cleaner./?

I suspect he means carb cleaner under high pressure.

I've posted about this before, somewhere, but a successful method I used involved a piece of fuel line, a basketball, and a basketball inflation needle. It's truly ghetto, but effective.

Get about an 18" length of fuel line that fits tightly over the injector inlet. Fill the tube with carb cleaner. Put the other end of the tube over the BIG end of the inflation needle, and poke the needle into the b-ball. That gives you about 10 psi of pressure--that's not high pressure, but it should be enough. Once you've got that set up, pulse the injector from the battery, and look for an even spray pattern. Be careful of where the cleaner goes because you're dealing with sparks and flammible liquids.

take to AZTPI.com. yjey were pretty cheap, and knew their stuff. gave me a flow chart and all that jazz

I'm pretty sure that I agreed with you original post. :)

You did.. My bad...:)