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2016 Silverado low pressure fuel pump plumbing

Old 01-13-2019, 07:53 PM
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Default 2016 Silverado low pressure fuel pump plumbing

Is the purpose of the venturi device on the bottom of the pump to pull in cool fluid and mix it with the warm motor coolant reducing the temperature and vapor pressure? Must be. Whatís the silver thing for? Vacuum breaker?

Canít get the pictures to load, sorry. Hopefully you know what Iím talking about. The venturi is a little plastic device attached at the bottom of the pump. The driver looks to be motor coolant return and it pulls from the bucket. The silver thing is a top hat shaped about 1Ē metal device mounted on top of the bucket with a dip tube going about half way down.

Last edited by Littlefield; 01-14-2019 at 02:31 PM.
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Old 01-24-2019, 11:38 AM
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Normally, the purpose of a venturi is to pull fuel into your bucket preventing pump starvation and can double as cooling the pump. Put up some pics. Im interested to see inside one of these. Without seeing it, I will bet the "silver" thing is your pressure regulator.
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Old 01-25-2019, 07:49 PM
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For some reason I canít get pictures to upload. Browse, select, upload, nothing. Anyway, the venturi definitely does not pull from outside the bucket. I took the metal piece out, it is connected to the top of the cooling can which is fed from pump discharge and exhausts down into the bucket. Must be overpressure protection. The pressure is controlled on demand by the PWM, correct?
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