Operation CHARM: Car repair manuals for everyone.

Vehicle Damage Warnings


- Do not operate the fuel pump without fuel in tank.

- Do not depress the accelerator pedal while trying to start the car.

- In case of poor engine operation (misfiring), avoid driving the vehicle and correct the problem as soon as possible.

- Do not disconnect a spark plug wire with the engine running.

- Avoid push or pull starting the vehicle.

- If running on a chassis dynamometer, make sure the catalytic converter is well ventilated.

- To avoid damaging the oxygen sensor, use only sealants and lubricants that are approved for use on an oxygen sensor equipped vehicle.

- When performing a compression test, remove the fuel pump relay. (This prevents fuel from being fed to the injectors).