Chevrolet 1996 Blazer Bedienungshandbuch Seite 251

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Fuel
Use regular unleaded gasoline rated at
87
octane or
higher. At a minimum, it should meet specifications
ASTM
D4814
in the United States and CGSB 3.5-M93
in Canada. Improved gasoline specifications have been
developed by the American Automobile Manufacturers
Association (AAMA) for better vehicle performance
and engine protection. Gasolines meeting the AAMA
specification could provide improved driveability and
emission control system protection compared to
other gasolines.
Be sure
the
posted octane is at least
87.
If the octane is
less than
87,
you
may get a heavy knocking noise when
you
drive. If it’s bad enough, it can damage your engine.
If you’re using
fuel
rated at
87
octane or higher and
you
still hear heavy knocking, your engine needs service.
But don’t worry if
you
hear
a
little pinging noise when
you’re accelerating or driving up a hill. That’s normal,
and
you
don’t have to buy a higher octane
fuel
to
get rid
of
pinging.
It’s
the
heavy, constant knock
that
means
you have a problem.
If
your vehicle is certified to meet California Emission
Standards (indicated
on
the underhood tune-up label),
it
is designed to operate
og
fuels that meet California
specifications. If such fuels are
not
available
in
states
adopting California emissions standards, your
vehicle
will operate satisfactorily
on
fuels meeting federal
specifications, but emission control system performance
may be affected. The malfunction indicator lamp on
your instrument panel may
turn
on and/or your vehicle
may fail a smog-check test. If this occurs, return to your
authorized GM dealer for diagnosis to determine
the
cause of failure.
In
the event
it
is determined that
the
cause
of
the condition is the type
of
fuels used, repairs
‘may
not
be covered by your warranty.
In
Canada, some gasolines contain an octane enhancing
additive called MMT. If
you
see
such fuels, your
emission control system performance may deteriorate
and the malfunction indicator lamp
on
your instrument
panel may turn on.
If
this happens, return
to
your
authorized GM dealer for service.
6-3
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