Engine Cold start valves tapping!

[Rick66embglcovt]

My 289 A code - valves tap for a moment on a cold start when the car has been sitting for a week or more! Is this normal ? And if not would adding Marvel Mystery or anything else help with this problem?

 

[jetmech807]

My 289 A code - valves tap for a moment on a cold start when the car has been sitting for a week or more! Is this normal ? And if not would adding Marvel Mystery or anything else help with this problem?

I've had several old v8's from various manufactureres. They all ticked a bit at start up. Lifters bleed down and need to pump up for a sec on start up.

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[rbohm]

after a long rest, the lifters have bled down, and need to pump back up before they quite down. i have also had many engines from different manufacturers that did the same thing. sometimes ford engines come from the factory with a slight valve tick as standard equipment.

 

[jetmech807]

I don't think Ford built a 300 I-6 that didn't tick.

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