My 1991 2.5 turbo diesel has 140k mi.
Until about 2 months ago, the car
accelerated briskly from 2200 rpm when
the turbo kicked in. In the last 2
months, the car often shows no increase
in power at 2200 rpm, and very low power
until approximately 3700 rpm. The fuel
injectors have not been replaced in the
last 70k mi and are probably original
to the car. In the last 6 months it has idled rough to very rough. Fuel filter
changes and Redline fuel treatment
have helped greatly and the primary
fuel filter now runs clear. Idle is
still somewhat rough at times.
I suspect the injectors are the
problem but would appreciate any
assistance in diagnosing the problem.

Darrell

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