The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Knock after a simple carb swap

**kidatheart** · 09-15-2020, 08:36 AM

Sometimes the fuel pump can make a solid knocking sound all of the sudden. Try the old broom handle-to-the-ear trick.

09-15-2020, 08:36 AM	#4
kidatheart Senior Member Join Date: May 2012 Location: Assaria, Ks Posts: 465	Re: Knock after a simple carb swap - Thoughts? Sometimes the fuel pump can make a solid knocking sound all of the sudden. Try the old broom handle-to-the-ear trick.