Under Bonnet Noises

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Page created by T Oct 15th 2007:

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Under Bonnet Noises:

The Pinch Test:

Pinch each rubber hose shut with flat pliers to see if any squeals disappear. Also good for troubleshooting rough idle symptoms.

The Stethoscope Test:

Get a vacuum cleaner hose. Hold one end to your ear and point the other at parts of the engine to help isolate noise sources.



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