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Use a pressure gauge connected into the oil system to see if there is adequate oil pressure. This will tell you if the pump is giving enough pressure. The only way to check the pump to see if the filter is clogged or if the input shaft is worn is to remove it from the engine.

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9y ago
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15y ago

if the pump is installed already, turn on your engine and open up your radiator cap. IF you see water circulating, then your pump is working.

If your truck over heats though, that would be your thermostat.

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9y ago

You can test your automotive mechanical fuel pump with a diagnostic tester. The diagnostic tester can tell if the fuel pump is operating properly.

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11y ago

always look at the numbers to see if its working if they stay at the number they were before that means it doesn't work so u have to go to the manager

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Q: How do you check if fuel pump is working?
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