Quick question about cleaned injectors

[need RX7]

I had my injectors cleaned at Witch Hunter Performance a little while ago. They say to install them within 30 days of cleaning, but I had some setbacks with working on the car and it's been about 35 days since I got them back. I'll probably have them back in by this weekend. What could potentially happen if they are left to sit for too long?

[RETed]

They lock up.
For some reason, these fuel injector cleaning places cannot source out a cleaner / lubricant chemical that allows for really long shelf times after the initial cleaning.

Luckily, we have a pro fuel injectors shop down here in Hawaii.
We they first opened, no one knew of this problem.
We ran several sets through them, and we had problems with the fuel injectors not opening at all after sitting around for several weeks.
Their initial cleaner had a shelf life of about 2 weeks.
They started to change the cleaner chemicals, and now we've got a 30 day window - same like yours.
Because of this, we tend to take care of the fuel injector cleaning at the last minutes just to avoid this.


-Ted

[need RX7]

Shit... Guess I better hurry up then :leaving:

[85rx-7gsl-se]

Wow, never heard of this before. Good to know.

[need RX7]

So, do you think I'll be okay with being a few days over?

[classicauto]

Shouldn't hurt.

But worst case, drip some fuel into the feed end of the injector and cap it. At least then its got something else other then air/cleaning agent inside it.

[dregg100]

you can free then up by shocking them with 12v for a split second.

[Max777]

you can free then up by shocking them with 12v for a split second.

are you shure this wont mess them up? I just want to be certain in case i need to do this...

[RETed]

There is nothing wrong with doing that.
In fact, that's exactly how they work normally.
The circuit is PWM 12VDC.

I would one step further and try and get (pressured) gasoline to flow through the injector.
It's the cleaning chemical that locks up the injectors.
Once you flush them out (with gasoline), they store fine.


-Ted

[BLKTOPTRVL]

There is nothing wrong with doing that.
In fact, that's exactly how they work normally.
The circuit is PWM 12VDC.

I would one step further and try and get (pressured) gasoline to flow through the injector.
It's the cleaning chemical that locks up the injectors.
Once you flush them out (with gasoline), they store fine.

-Ted

If this is the case, then how much pressure is usually in the rail during opperation of the injectors?

[classicauto]

stock is ~38psi.

[RETed]

Just like classicauto said...
It's about 40psi at "0" atmosphere.
You can run it up to 60psi if you like, but keep it under 70psi if possible.


-Ted

[TehMonkay]

40psi