91 liberty auto losing power up slow incline anyone????

[Julie]

hey guys is anyone else had or experiencing the same problem as we are
it happens as mentioned going up a long slow incline generally losing power
to the point where it shakes and then stops
so far mechanics 3 of them have suggested from lifters (replacing them), to
oil flushes @ $150 each (did 3 of these, now flushing the oil ourselves when
the problem increases)
we have replaced fuel filter, fuel pressure regulator (most improvement so
far), spent $$$ on oil flushes (mechanics suggest this the problem, although
it fixes it short term it has never been a permanent resolve
we have come to the conclusion it is definately fuel related and at this
point we are considering replacing the fuel injector o rings and the
insulator on the underside of the caps

please if anyone has any suggestions we would love to hear from you.

 

[Edward Hayes]

I would next check the fuel pump pressure. Lifters and oil changes??
I'd find another mechanic. I agree that fuel or lack of it could be
the problem. You may want to use a good fuel system cleaner like
Techron concentrate (Wal-Mart ^-& dollars). That would clean up the
injectors and intake valves. let us know what you find.

 

[Ed P]

hey guys is anyone else had or experiencing the same problem as we are
it happens as mentioned going up a long slow incline generally losing power
to the point where it shakes and then stops
so far mechanics 3 of them have suggested from lifters (replacing them), to
oil flushes @ $150 each (did 3 of these, now flushing the oil ourselves when
the problem increases)
we have replaced fuel filter, fuel pressure regulator (most improvement so
far), spent $$$ on oil flushes (mechanics suggest this the problem, although
it fixes it short term it has never been a permanent resolve
we have come to the conclusion it is definately fuel related and at this
point we are considering replacing the fuel injector o rings and the
insulator on the underside of the caps

please if anyone has any suggestions we would love to hear from you.

Julie,

I have no idea how prone Subaru's are to this but I recall a car I
worked on years ago with a complaint of losing power only after long
moderate pulls and it turned out to be carbon build up on the valves.
Has anyone done a compression and/or a leak-down test on the engine?

Ed P

 

[Carl 1 Lucky Texan]

possible clogged catalytic converter - especially if this symptom is
more likely or worse when car is hot or has been driven for a while.
Also, I THINK I recall a fuel pump or fuel pressure regulator causing
this too.

Carl