Nasty injectors + compatibility

[maria24017]

So we made is to the $65 carry sale... Got the differential for moms car and I got fuel rails, injectors, coil pack, plug wires, purge solenoid, relay fuses and a set of aluminum subaru rims.. As well as a back seat for my fathers truck, he carried all of it. I know Josh has said that a bad purge solenoid can cause all kinds of crazy problems so I replaced that after spraying it out with some brake cleaner.. I've driven it about 60 miles so far and the code hasn't come back. It had been coding for 2 fuel injectors but now it is only coding for one (and the knock sensor, but we've replaced the wire up to the ECU with no success).

I was about to swap out the fuel rails but when I pulled mine out I realize that the ends of the injectors were sticking out a good bit past the rails, whereas what I pulled off the other car was nearly flush. Are they still compatible? I realized later that the other car was apparently a base FWD wagon, so not sure how much difference that makes.

Here's the thing though, I'm pretty sure that I need to do something about mine ASAP. When I removed the fuel rail (in one piece with the injectors) they were FILTHY , so were the holes that they sit down into. What I got from the junk yard had the smallest amount of brown residue on them.

So I just need to know if I can swap out my rails and injectors with what I got from the junk yard and what I need to do to clean the holes out on the engine (I'm sure there is a technical term for these, I just don't know it :-p )

The injectors on my car have grayish-white plugs and the new ones are red..

[Someperson]

Your car is a turbo, yes? If so, then those injectors will probably make your car run lean cause they'll feed less fuel, which is a bad thing. Have you ever run seafoam (injector cleaner, not the crap from the ocean lol) through your fuel system? Ask in the partout threads for injectors

[maria24017]

No. Mine is not turbo.

I know what sea foam is. I had about a gallon of gas in my tank and added a bottle if sea foam this morning.. Drove it about 15 miles before adding more gas.

[Someperson]

Not sure then, post pics please

[maria24017]

Of mine or the new ones? Or both? Before I take mine back apart my mothers car needs to be finished.. Probably today.

The second injector code came back earlier

[Legacy777]

For reference, there are four different injectors that were used on the North American 90-94 Legacy

Non-turbo
90-91 MT - Black Body
90-91 AT - Gray Body
92-94 MT & AT - Red Body

Turbo
91-94 MT & AT - Pink Body

Here is a picture of the two different injectors between the 90-91 non-turbo MY's

http://main.experiencetherave.com/subar ... ectors.jpg

As the document states, the black & gray injectors are not interchangable.

The red injectors again won't directly fit into the rails of the 90-91 Legacies. You can swap the rails and the engine will run, but it will run slightly rich. I ran into this issue several years ago. However, you can run the 92-94 Legacy JECS ECU, which matches the red injectors and everything will work correctly. This can only be done on the 90-91 AT Legacies because they also have JECS electronics, vs. the MT's Hitachi electronics.

The only difference that I found in wiring between the 90 ECU and the 92-94 ECU is that the AT/MT identifier pin is wired backwards. It's not a big deal and you'd just need to snip the wire going to that pin.

I know there's a bit of info here, but does that make sense?

[maria24017]

Makes perfect sense. I guess I will look into testing and possibly rebuilding my current injectors or buy some and sale my "new ones" with the rails

[maria24017]

Are injectors from a 93 legacy L a direct fit? My father is going back tomorrow to get front seats for his truck and they just added a '93 L today. The injectors are only $5 each

[Legacy777]

To make everything work you would need the injectors, fuel rails, and ECU. The only ones that are direct fit into your 90 are the gray injectors found in the 90-91 AT Legacies.

[maria24017]

Thanks Josh. They didn't have any other cars that would have been compatable. I looked on car-parts.com and have sent out some inquiries. There are a couple of sets listed for $20 each.