I spend quite some time in trying to solve a rather uncommon problem.

One week ago I mentioned it in http://www.ultimatesubaru.org/forum/showthread.php?t=87641

 

(Impreza , 1993 , 1,8l)

First cleaned the rails and injectors by putting some cleaning liquid.

I think this was my first mistake.

Took out the left and right front injectors and interchanged them.

I think this was my second mistake....

Question : Why is there a sticker on the two rows with R and L ?

Are left and right not identical ?

3 out of 4 injectors do have a resistance between 11 and 15 ohm ,

which is the spec.

The one originally placed left has 6,8 ohm...

And I guess that this one is now always open , taken out the plug and rotating the engine results in fountains of gas.

Once in a while the engine runs on 4 cilinders , mostly just 3.

 

Then the search for parts : in the country I am , no change.

Subaru dealers exist but helping service is negative.

 

Ordered 4 in the USA , hope to get these soon.

(and I hope the right ones....)

Most online shops do not ship outside the USA.

Ebay is mostly better , but what is the right injector for me?

The ones which are now installed are pink , but there are grey ones ,

yellow , red and more....All seem the same in terms of size ...

 

Question : Is it the amount of gas per millisecond who goes trough it ?

 

I found some references but are these correct ?

Partnr. FJ445 or 16611AA300 or 2320916120 ..............

 

Last Question : is there some emergency manner for fixing the wrong injector ?

Where is the R & L sticker? Is it on the injector itself, or is it on the fuel rail?

 

On the first gen legacies 90-94, the fuel rails are left & right specific, however injectors should not be left/right or cylinder specific.

 

Is your 93 Impreza a US spec vehicle?

 

From the info I've found and the parts book, the part # you want is 16611AA300

 

Josh

Where is the R & L sticker? Is it on the injector itself, or is it on the fuel rail?

Josh

 

It is on the fuel rail , one sticker on one end only.

In fact NOT on the rail , but on the pieces , who hold the individual injectors in place. Each with the 2 screws.

 

On the first gen legacies 90-94, the fuel rails are left & right specific, however injectors should not be left/right or cylinder specific.

 

Is your 93 Impreza a US spec vehicle?

 

I don't know for sure if it is yes or no ,

the vin is : JF1GF6LR5PG010513 , it was sold via on official dealer in Brazil.

 

From the info I've found and the parts book, the part # you want is 16611AA300

 

That is also the number I did transfer to the seller , I hope for the best....

Thanks...

The parts with the R & L stickers are considered the fuel rail. They hold the injectors and are mounted to the intake manifold. The reason they are R & L specific is because the rear fitting one the R fuel rail is different so that the fuel pressure regulator can bolt to it. The L fuel rail just has the fuel lines connected to it.

 

I think you'll be good with what you ordered.

 

Josh

The parts with the R & L stickers are considered the fuel rail. They hold the injectors and are mounted to the intake manifold. The reason they are R & L specific is because the rear fitting one the R fuel rail is different so that the fuel pressure regulator can bolt to it. The L fuel rail just has the fuel lines connected to it.

 

I think you'll be good with what you ordered.

 

Josh

 

Just some follow-up , the USA ordered parts did not yet arrive (there is some Brazil customs strike going on) , but I managed to get one injector (used) injector for bare gold , in this country.

Now it is behaving like it did never before , for sure this faulty injector did cost me a lot of gas...The engine is like new.....

 

The last miles with the faulty injector was about 1liter/Km , or 2MPG...

I did a change of the oil afterward , very high level , and of course mixed with gas. Oil was like water....

But as I said , already one year ago this injector did strange things , now this becomes clear.

It might not happen very often , therefore I changed everything before

which everybody thinks first ,(filters , plugs , etc) but do not forget the injectors , that is the lesson I learned....

 

Thanks for the advices , Harry

I'm glad you found the problem, Harry. You might be well advised to change the oil again in a couple hundred miles (or less). There will still be enough fuel in the engine to destroy the new oil you just put in.