Engine Performance Safety Precautions — General Information — Engine Performance

Engine Performance Safety Precautions BMW Z4 E89

Always refer to Emission Decal in engine compartment before servicing vehicle. If manual and decal differ, always use decal specifications.
Do not allow or create a condition of misfire in more than one cylinder for an extended period of time. Damage to converter may occur due to loading converter with unburned air/fuel mixture.
Always turn ignition off and disconnect negative battery cable BEFORE disconnecting or connecting computer or other electrical components.
DO NOT drop or shock electrical components such as computer, airflow meter, etc.
DO NOT use fuel system cleaning compounds that are not recommended by the manufacturer. Damage to gaskets, diaphragm materials and catalytic converter may result.
Before performing a compression test or cranking engine using a remote starter switch, disconnect coil wire from distributor and secure it to a good engine ground, or disable ignition.
Before disconnecting any fuel system component, ensure fuel system pressure is released.
Use a shop towel to absorb any spilled fuel to prevent fire.
DO NOT create sparks or have an open flame near battery.
If any fuel system components such as hoses or clamps are replaced, ensure they are replaced with components designed for fuel system use.
Always reassemble throttle body components with new gaskets, "O" rings and seals.
If equipped with an inertia switch, DO NOT reset switch until fuel system has been inspected for leaks.
Wear safety goggles when drilling or grinding.
Wear proper clothing which protects against chemicals and other hazards.

Engine Performance Safety Precautions BMW Z4 E89

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