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volvo Workshop Repair Guides


940 L4-2.3L SOHC VIN 88 B230F (1992)

Maintenance > Timing Belt > Component Information > Service and Repair > Initial Checks > Page 2813

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NOTE:  The ignition timing will also affect the manifold vacuum levels, verify the timing is correct prior to measuring the vacuum.

If the after-repair vacuum level is lower than the pre-repairs level this would be an indication that the timing belt may not be installed correctly.

NOTE:
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The vacuum checks should be made at similar engine speeds and temperatures.

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Check "manifold vacuum" at a source downstream of the throttle plates.

Maintenance > Timing Belt > Component Information > Service and Repair > Initial Checks > Page 2813

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