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2torial #0523:
Learn2 Check Out a Used Car
This could be the beginning of a beautiful
relationship...
Buying a used car can be exciting. It can also
be a gut-wrenching experience if you don't know
what to look for. A smooth-talking seller mover can
easily gloss over the effects of an accident or
irreparable damage. This doesn't mean drop it all
and opt for a high-interest lease: private-party
buying is still the most affordable option.
Of course, taking the car to your own mechanic
for a lookover is always recommended. Since this
gets expensive after a few passes, you can narrow
the field of choices by being better informed. This
2torial explains several good omens in a used car,
and also some warning flags that you should be on
the lookout for. When you've found a good
candidate, take it into your mechanic for the final
run.
Note: There are certain exceptions to
these guidelines for diesel engines. This 2torial
may not assess all of those exceptions.
Either on the phone or in person, ask the seller
a few general questions to evaluate both their
knowledge and the car's condition, as well as
possible problems. Be forewarned that car sellers
might not be aware of any troubles. Even if they
do, they may understate them. Here are good
questions to ask:
- Are you the first owner? If the owner
has cared for the car, there will usually be
receipts to prove it.
- What's the mileage? Don't emphasize
this too much, but do take it into account. Ask
if they drove mostly on highways or in the city.
Highway miles are better, but this is still only
one indicator. Accurate mileage can be assessed
through maintence records or by checking the
stickers on the inside of the driver's door.
- Why are you selling the car? "Because
I had a baby," is a good answer; "I just feel
like it," can make you wonder if the car has
needed continual repairs.
- What condition is it in? The "Get
What You Paid For" theory certainly applies to
used cars. Ask how often the car has been
maintained (oil checked, timing adjusted, tires
rotated) just to get a general idea. Ask to see
the receipts for this work.
- Has it been in an accident? An
accident can alter anything from the car's
steering to the engine's performance; front-end
damage can be especially problematic.
- Has the car been emissions-tested?
Different states have different regulations, so
find out what's need in your state. Be
careful--this can require complex repairs if the
car isn't up to standards.
- Any other problems? These might
include problems with: the engine (strange
noises while running, oil leaks), the
transmission (clunking sounds while shifting,
slipping out of gear), the clutch (sticky,
stiff, or difficult to shift), the brakes
(pulling or locking--see Step 6), and the body
(rust, dents).
Note your first impression
Ask yourself: what's the initial feeling you get
from your first look at the car ? A closer look
will reveal if the owner took care of the car. Does
the car appear to be well-cared for, perhaps
bearing signs of the owner's affection?
- Examine for rust, an epidemic that
can destroy a car's integrity.
- Beware of newly painted cars. That's
a possible cover-up for more serious damage to
the body.
- Has the car been parked outside or in a
heated garage?
- Are there considerable dents, mismatched
paint areas, or poorly fitting parts?
Wavy-looking panel surfaces or flaking paint can
mean a cover-up for an accident.
- Look inside the car for wear and tear on
the seats and pedals. This is another
indication of the quality of the owner's car
care.
Check the underside and tires
Look under the car up and down its entire
length. Any fluids dripping to the street? Look
around the area for dark patches on the ground.
- Study the fluids. Oil or manual
transmission fluid is black, while automatic
transmission and power steering fluid is red.
- Antifreeze or coolant are thin, watery
liquids, usually green but sometimes red.
- Gas and water are clear and mostly
colorless. It's not unusual for a used car
to leak a bit of oil from the engine block or
some water after running the air conditioner,
but have your mechanic examine the source of any
leaks.
- Take a look at the tires--including the
spare, which is often the most worn. A tread
that's uneven to one side is a sign of poor
alignment or balance. A lack of tread on the
outside or inside of the tire usually means over
or underinflation.
Check under the hood
Look under the hood, but make sure the engine
has cooled off before you touch anything.
- Any mismatched bolts or offset paint
may mean a front end accident.
- A sprayed black film on the underside of
the hood usually means oil leaks or oil
pressure.
- Examine the engine belts for wear.
These are thin, black ovals of rubber that are
attached to certain parts of the engine. After
long use they start to show white, frayed
strands on their edges.
Perform gauge and listening tests
Leave the hood open. Make sure the emergency
brake is on and the car is in Park (or neutral in
manual transmissions).
- Turn the key to the On position. Look
for the oil pressure, brake pressure and
alternator (battery) lights on the dashboard. If
the car has gauges for these systems, they may
not light up. (But if there are no gauges and
these light up before you start the car, that's
good. If they don't, they are either burnt out
or disconnected.) Start the car and see if the
lights go off. If not, ask the owner what the
problem is.
- Does it start right away? If so,
check the tachometer. This is a gauge that
indicates how fast the engine is running,
measured by the number of
revolutions-per-minute, or rpm. Look for a gauge
with these letters. Most cars will rest steady a
little below 1000 rpm when warm. Depress the
accelorator pedal a few times and watch the
tachometer rise, holding it at about 3000 rpm
for a few seconds. Listen to the louder,
higher-pitched sound of high rpm. Then let off
the accelorator pedal. Does the engine stay at
that high level for a bit, then settle back at a
comfortable range once you've released the
pedal? Or does it maintain a high, loud sound?
If it stays at the high, loud level, the idle
needs to be adjusted. Fortunately this is not
too expensive.
- Although a consistent ticking while
idling is usually normal, a loud chatter or
refusal to hold at a certain rpm level are
sometimes the harbinger of hefty mechanic bills.
On the other hand, the infamous knocking and
pinging sounds may only require a tune-up or
change of gasoline: high-octane gasoline will
often silence the knocks and pings.
- Watch the tailpipe while depressing the
accelerator, looking for the color of the
exhaust. White is OK when the engine is
cold, but could indicate a serious problem if
it's already warm. Blue means engine work
is likely needed, and black means a minor
adjustment. Once the tailpipe is cool (be
careful), wipe the inner surface of the tailpipe
with a rag or your finger: white or gray dust is
normal. Thick, greasy soot means the car burns a
lot of oil--this can be serious.
Check the oil and brake fluid
Some people consider gasoline to be the
lifeblood of a car, but really it's the oil that
keeps everything running smoothly. Car owners who
neglect the oil levels in their car are taking
years of its life--the engine runs very hot and it
puts stress on many other parts as well. If you've
ever been two quarts' short of blood, you can
appreciate what it does to a car. So if you're
looking at car that shows signs of oil neglect,
know that the engine has taken a lot of wear and
tear.
- Once the engine is warm (has been running
a few minutes), turn off the ignition and
carefully locate the engine's dipstick. Pull it
out and wipe it clean with the rag. nsert the
dipstick, pull it out again and check the oil
mark left on the dipstick by the oil.
- There's usually a three-tiered
measurement on the dipstick: low, safe, and
full. Dark oil is OK, considering fresh oil
soils quickly; but it should be somewhat thin,
not thick and globby. Since oil is the easiest
maintenance to attend too, a seller's neglect in
this manner should be duly noted--they may have
neglected other important maintenance or
repairs. If the oil is still clear and the
seller claims not to have changed it in over a
month, you have a sign of recently added oil.
This may mean they've driven the car with low
oil. As noted above, this is very bad for the
engine.
- Check the brake fluid. It should be
located under the hood in the back right-hand
area. Removing the rubber cap will reveal the
fluid level. Without brake fluid, the brakes
can't stop the car.
- With automatic transmissions, check the
transmission fluid. With the engine idling,
pull out the dipstick (under the hood nearest
the firewall) and check the level and make sure
the fluid is reddish in color. As with oil, low
levels (possibly a leak) or a thick, greasy
substance (indicates grinding) mean problems.
Check the shock absorbers and
lights
- Walking around to each corner of the car,
bounce the car up and down several times.
When you release it, you should feel the car
bounce back twice. Good shock absorbers will
have no more than two bounces in them. More
bounces mean shock absorber replacement.
- Test all lights: brakelights,
headlights and reverse lights. Do this before
you take the car out. Also test the horn and
turn signals.
Check for play
Play is the amount that a part can move
before it engages. A little play is good; too much
means you have less control over the car. Check for
play in the steering wheel, clutch and brakes.
- The steering wheel: This should not
move more than two inches in either direction
without turning the wheels.
- The clutch: Once you've put the car
into first gear, how far does the clutch rise
before the car moves? If it doesn't work until
it returns to its original location, the clutch
may need an adjustment or replacement. Note: a
clutch replacement is often $400 or more.
- The brakes: These should not move
within two inches of the floor when pressed.
Press the pedal as far down as possible. Hold it
there for 45 seconds. The brakes should hold
firm; if they don't, there may be a leak--be
very careful when driving.
Take it for a drive
Make sure to put on your seat belt, and drive
especially carefully in an unfamiliar and untested
car. Here are some things to test:
- The brakes: Don't test the car if you
don't feel good about the brakes. But if you do,
test them at the beginning to make certain they
work. Then test them at 15 mph to see if they
pull to one side, make a screeching sound, fade
(a difference in stopping range) or stick.
Pulling may only mean an easy adjustment, while
screeching and fading could mean the brake shoes
are worn and work is needed, as can fading. A
shuddering movement may indicate an uneven brake
rotor, which is an expensive repair. If you're
comfortable and away from traffic, test at 30
mph and 50 mph for the same symptoms.
- The steering: If the wheel shakes
when making a turn, there may be a suspension
problem. If all seems well, take the car up to
highway speed and up some hills to test the
car's performance. If the steering wheel
vibrates at high speeds, there may be an
alignment problem.
- The manual transmission: Is it
difficult to get the car in gear when shifting
up or down (i.e. sticky or stiff)? If you hear a
grinding sound, there may be transmission or
clutch problems. If the sound is isolated to one
gear, transmission problems are more likely.
Just after shifting into a new gear, does the
transmission pop out or jump out of gear? This
can mean a worn clutch as well.
- The automatic transmission: Note if
the transition between gears is jerky. With
either manual or automatic, put the car in
reverse. Accelerate and stop a few times. If you
hear a clunking sound, you may have a bad
differential (expensive to replace).
- The exhaust: Put the car in neutral.
Have your friend check the color (see Step 3) as
you depress the accelerator.
-end-

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