Preparation for Testing
BEFORE YOU BEGIN - VEHICLE SERVICE MANUALS
BEFORE YOU BEGIN
Fix any known mechanical problems before performing any test. See your vehicle's service manual or a mechanic for more information. Check the following areas before starting any test:
Check the engine oil, power steering fluid, transmission fluid (if applicable), engine coolant and other fluids for proper levels. Top off low fluid levels if needed.
Make sure the air filter is clean and in good condition. Make sure all air filter ducts are properly connected. Check the air filter ducts for holes, rips or cracks.
Make sure all engine belts are in good condition. Check for cracked, torn, brittle, loose or missing belts.
Make sure mechanical linkages to engine sensors (throttle, gearshift position, transmission, etc.) are secure and properly connected. See your vehicle's service manual for locations.
Check all rubber hoses (radiator) and steel hoses (vacuum/fuel) for leaks, cracks, blockage or other damage. Make sure all hoses are routed and connected properly.
Make sure all spark plugs are clean and in good condition. Check for damaged, loose, disconnected or missing spark plug wires.
Make sure the battery terminals are clean and tight. Check for corrosion or broken connections. Check for proper battery and charging system voltages.
Check all electrical wiring and harnesses for proper connection. Make sure wire insulation is in good condition, and there are no bare wires.
Make sure the engine is mechanically sound. If needed, perform a com- pression check, engine vacuum check, timing check (if applicable), etc.
VEHICLE SERVICE MANUALS
Always refer to the manufacturer's service manual for your vehicle before performing any test or repair procedures. Contact your local car dealership, auto parts store or bookstore for availability of these manuals. The following companies publish valuable repair manuals:
Haynes Publications - 861 Lawrence Drive, Newbury Park, California 91320 Phone:
Mitchell 1 - 14145 Danielson Street, Poway, California 92064 Phone:
Motor Publications - 5600 Crooks Road, Suite 200, Troy, Michigan 48098 Phone:
FACTORY SOURCES
Ford, GM, Chrysler, Honda, Isuzu, Hyundai and Subaru Service Manuals
Helm Inc. - 14310 Hamilton Avenue, Highland Park, Michigan 48203 Phone:
Craftsman 14063 | 25 |
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