Telltale Signs It's Time to Rebuild (or Replace) Your Vacuum Pump

What's that knocking noise? Maybe your truck is telling you it needs some TLC.
Telltale Signs It's Time to Rebuild (or Replace) Your Vacuum Pump
Maintaining truck parts and components, such as the vacuum pump, will help protect your investment — and keep it running — for years to come. (Photo by Mike Hoffman)

Has your pump lost its pop? Are there strange noises coming from inside the housing? Perhaps it’s time for a rebuild or even a new vacuum pump.

Dave Flagg, Moro USA president and CEO, says telltale signs of a failing pump include loss of vacuum, loud bearing noises and worn...

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