Preparation For Testing; Before You Begin - Zurich ZR11 Owner's Manual

BEFORE YOU BEGIN

Mechanical problems such as low
oil level or damaged hoses, wiring
or electrical connectors can cause
poor engine performance and
may also cause a fault code to set.
Fix any known
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
compression check, engine vacuum check, timing check (if
applicable), etc.

Preparation for Testing

mechanical
BEFORE YOU BEGIN
15