BIS - Wednesday. October 19, 1983 - North Shore News

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PREVENTATIVE MAINTENANCE BEST MEDIC.'NE
A dirty carburetor can hurt

WITH AVERAGE car
age now. approaching
seven years, there are
more and more vehicles
on the road vulnerable
to carburetor trouble.
The reason is that this
and other elements of
the fuel system seldom
get any attention until
trouble develops.

Quoting a survey among
members of the Automotive
Service Councils, hundreds
of repair shop owners
reported their customers
waiting too long for
maintenance, generally get-
ting work done after the car
has let them down.

**We see a much longer in-

terval between service ... peo-
pie wait until their cars have
problems ... more tow-ins."’

‘““We are finding mass
abuse, nothing is being done
until trouble starts, or when
problems are pointed out by
someone.”"

Another says, with regard
tO preventive maintenance,
‘We find many customers
are only repairing what has to
be repaired and not any
more.”’

Hesitation on acceleration
or surging when you are driv-
ing at a constant speed are
two early warning signs that
your car's carburetor may
need service.

If your car has sluggish ac-
celeration or is ‘“‘bucking’’ at
cruising speed, it may be due

Need a tune-up?

FROM PAGE B14

sumed versus mileage driven
to be aware of increasing
consumption.

2.Rough idling or
roughness on acceleration.

3. Hard starting.

4. Dieseling or run-on
where the engine continues to
run a few seconds after the
ignition is turned off.

S. Knocking or pinging,
especially under load. (This
can be caused by running on

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fuel of insufficient octane;
but it can also be due to the
need for tune-up
adjustment.)

6. Noticeable drop in
power or performance.

While the new breed of
American car is vastly more
fuel efficient than its counter-
part of just a few years ago, it
sull requires periodic service
and adjustments,  replace-
ment of necessary fuel and ig-
nition components to keep 1
running {hat way.

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to a lean condition in the car-
buretor. It’s a sign that the
fuel filter may be clogged
with dirt and preventing fuel
from reaching the
carburetor.

Preventive maintenance of
the fuel system is critical,
says Car Care Council. Dirt
in the carburetor, a condition
found most often when car
owners fail to have fuel filters

replaced or when they bu: the
substandard fuel, can caus-*
clogging of carburetor jet
and ultimate failure.

Another area of trouble ts
the needle valve and seat
which, when sticking or
otherwise leaking, can permit
excessive fuel to enter the car-
buretor float chamber.

The action ts similar to the
shut-off valve connected to

float in a totlet tank
when it fails to shut oft, the
water keeps on running. In
the case of a carburetor, the
tuel continues torunintothe tual fouling of spark plugs
carburetor, causins ex. Occur.
cessively rich mixture and It, on the other hand, the
possibly flooding. choke fails to close, which ts
A symptom not unlike the part of the action required
one mentioned above can tor cold starts, the car will be
ome from a sticking choke difficult or impossible to get
cr dirty air filter. When the started or warm up poorly.

choke fails to open, an ex-
cessively mch mixture of fuel
gets into the engine. Rough
running, smiling and even-

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