Grinding, " diesel " noise under valve covers

Ironracer said
How do I test for/ diagnose that? Wait a second! That may not be the Carter pump I put on it originally. That maybe some junk from advance auto... when I got the body, it was supposed to be a lot of things it Wasn't, so had issues w/ fuel delivery until I replaced tank, sender, and did a 3/8 line upgrade. Damn things looked like a rotted / clogged cast iron sewer line! But that was over a year ago
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it was just a wild guess as to being a possible culprit. The only way to make sure the lever is still tight on its pivot pin or that there’s not something amiss on the mechanicals is to remove and inspect it even though it still pumps. Doubtful it is the issue but you never know