I already talked about this case in an earlier thread , http://www.ultimatesubaru.org/forum/showthread.php?t=87795 ,

 

but since it became clear now , after some tanks of gasoline , that the failure was present much more time in the past.

 

Even if it might be seldom with failing injectors , over the time I ownded the car , I spoiled quite an amount of mony in using too much gas , as well as for other parts.

Hope that this info might help others..............

 

The impreza 1993 , awd, auto , 1,8 L , never was economically.

But the last months where very bad , may be 10 miles per gallon.

 

10 thousend miles ago , I always had problems with long downhill trajects ,

one plug stopped working for cilinder1 . Renewed all electical ignition parts , filters etc.

 

Became better , but not solved completely.

Always at certain rpm's the engine seemed to run on 3 cilinders...especially without a certain load.

 

Now everything is different , the engine runs smooth , no more black exhaust , the tank gauge does not seem to move anymore..

One injector never closed completely , and so it used exessive amounts of gas.

The faulty injector did it !

Cool!

How did you find the faulty injector?

Cool!

How did you find the faulty injector?

 

Try and error. The faulty one had a resistance of less then 7 ohms , normal is 12-15 ohms.

Just read the earlier treads.