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Are there general safety tips I should follow when
working on my own car?

First and foremost, do not attempt repairs that are beyond
your ability. If you feel unsure about a repair, you should seek
out a competent professional to do the work for you. Better to
pay someone who knows what they're doing than to attempt
to fix it yourself and screw it up. Many systems on vehicles
today are very complex.

Repairs often require considerable skill and expertise, not to
mention special tools and equipment. A simple mistake could
ruin sensitive (and expensive!) electronic components. So
don't tackle jobs that are beyond your abilities.

Know your physical limits, too. Don't attempt repairs yourself
if you're not physically able to do the work. Replacing certain
components may require heavy lifting (changing or removing
tires, pulling a cylinder head, etc.), crawling under the vehicle,
laying or working in an awkward position, reaching, bending,
twisting, pulling, tugging, straining, jerking and motions you
may not be accustomed to making.

Use common sense. If you have a bad back, joint problems or
lack the physical strength to do something, then don't. Hire
someone to do it for you.

Also, do not attempt to undertake any maintenance or repair
work on your vehicle if you're tired, not feeling well, tipsy, on
medication or otherwise impaired. Exhaustion, illness,
alcoholic beverages and even some medications may affect
your judgment and perception creating a potential for injury or
error.

•  Don't smoke when working on any fuel related components
(fuel filter, carburetor, fuel injectors, fuel pump, fuel tank or
fuel lines). Better yet, don't smoke at all. It's bad for your
health!

•  Have a fire extinguisher nearby just in case. The fire
extinguisher should have a "B" (liquids & grease fires) and "C"
(electrical fires) rating.

•  Don't smoke or get any sparks near the battery. Batteries
contain hydrogen gas which is very explosive.

•  Never crawl under an improperly supported vehicle. In
other words, don't trust a jack alone to hold the vehicle up.

•  Always use a pair of support stands positioned underneath
the vehicle to keep it from falling on you. Make sure the
support stands are of sufficient strength to hold up the
vehicle's weight, too. Don't use blocks of wood, boxes, wheels
or bricks for supports because these may slip or collapse and
allow the vehicle to fall.

•  Always disconnect one of the battery cables when doing
electrical repair work (as when replacing a starter, installing a
radio, fixing a broken switch or wiring, etc.). This will prevent
accidental shorts that could damage the wiring or start a fire.
This is also a very important precaution to heed when working
under the dash of any vehicle equipped with an air bag.
Crossing the wrong wires might set off the air bag (which could
cause injury and is very expensive to replace).

•  Never disconnect or unplug any electrical connector while
the engine is running or the key is in the "on" position (unless
specifically instructed to do so as part of a diagnostic
procedure in a shop manual). Unplugging connectors while
current is flowing through them creates a voltage spike that
can damage sensitive and expensive electronic components.

•  Do not wear loose clothing, jewelry, rings, neckties, scarves
or bulky gloves when working on your vehicle. If you have
long hair, tie it back or cover it. These items may become
entangled in pulleys or moving parts causing serious injury,
dismemberment or death!

•  Watch out for the drive belts, pulleys, fan and other moving
parts when working under the hood if the engine is running.

•  Watch out for hot stuff, too. If the engine is running or the
vehicle has been driven within the past half hour or so, the
engine, radiator, exhaust manifolds, catalytic converter,
muffler and pipes will be hot.

•  Never open the radiator cap on a hot engine. Always allow
the engine to cool for at least an hour before attempting to
open the cap. Even then, use extreme caution. Place a rag
over the cap, then loosen it slowly to the first detent or stop.
At this point any residual pressure and steam should be
released. Wait until all pressure has escaped before removing
the cap the rest of the way.

•  Avoid electrical shocks when working around the ignition
system. The normal battery voltage in passenger car and light
truck electrical systems is only 12 volts and will not harm you.
But the ignition system bumps the primary voltage up to
25,000 to 40,000 volts which can give you a nasty shock if you
touch a spark plug wire, the ignition coil or distributor cap
while the engine is running.

•  Wear eye protection when working under the vehicle (to
keep dirt and debris from falling into your eyes), when
pounding or grinding on anything (to keep metal chips out of
your eyes), when jump starting the battery (to keep acid out
of your eyes should the battery explode), when working on air
conditioning components (to keep refrigerant out of your
eyes), and/or when doing anything that might pose a risk to
your sight.

•  Do not open up any brake lines or replace any components
in a vehicle equipped with an "integral" ABS system (one
where the master cylinder is combined with the ABS
modulator, pump and pressure accumulator) without first
depressurizing the system. This can usually be done by
depressing the brake pedal 24 to 40 times while the key is off.

•  Use caution when opening any fuel lines on a fuel injected
vehicle. The pressure in some systems may be as high as 80
to 90 psi when the engine is running. So do not open any fuel
line while the engine is running unless your fire insurance and
life insurance are both paid up. Residual fuel pressure can
remain in the lines for many hours after the engine has been
shut off. To minimize fuel spray, wrap a rag around the hose
or line before loosening it, or relieve pressure in the line using
a procedure approved by the vehicle manufacturer (refer to a
shop manual for details).

•  Minimize distractions while working on your vehicle. This
includes small children, pets, friends, spouses, in-laws or
others who may distract you from your work. This will go a
long ways towards reducing the risk of injury and making a
mistake.

•  Tell someone if you're going to be working on your vehicle
outdoors or if you're going to be working underneath your
vehicle. Hopefully, they'll know how to dial 911 should the
need arise.

•  If you're working outdoors and using power tools, make
sure the extension cord you're using is rated for outdoor use,
that the extension cord and tools are properly grounded (a
"ground fault interrupt" outlet is recommended), and that the
cord has the proper amp rating for the tools you're using.
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