Thread: Not really a hotrod. but still a classic to me.

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Forgive my ignorance please! & Thank you!

Does the fuel pump use an " out-of-round " cam lobe to actuate an arm on the fuel pump?

Unlikely or possible the cam lobe for the pump is worn out?

Originally Posted by t-top havoc

Forgive my ignorance please! & Thank you!

Does the fuel pump use an " out-of-round " cam lobe to actuate an arm on the fuel pump?

Unlikely or possible the cam lobe for the pump is worn out?

Yes, there is an eccentric at the front of the cam to drive the fuel pump, and they have been known to wear flat. If they do you have that cam metal circulating throughout your engine lubrication system, which is not a good thing. You could check it by inserting the push rod, holding it against the cam with you finger, and having a buddy rotate the engine to see that the push rod moves in & out.