454 Occasional Lifter Tick

[BigRandy]

Originally Posted by GM man

As a rule, I'm not a big believer in oil additives, but recently my mechanic recommended I try a bottle of Rev X additive. It's expensive ($35 for 4oz bottle) but it worked wonders for me. Put it in a Ford with 3.5 ecoboost with over 250k miles and cold start up was very loud. Now it's silent. Since then I've put it in all my vehicles. No lifter noise from my wife's 5.3 anymore. You might give it a try.

I'm not a fan either. Have a friend of mine who swears by MotorKote so strongly he is almost ready to buy me a bottle to prove it.

I sort of trust MMO a little more since it's been around for decades and I never heard anything bad about it. I only added half a quart in a motor that takes 7 so I think I'll drain enough to get the rest in there, and try the water trick and see if it helps.

The clack is very random but loud when it's there. Only does it after it's warm and then only once in a while.

I'll toss my HF stethoscope in the front seat and maybe get to play doctor in a Walmart parking lot in a few days.

It could be the fuel pump rod but my good ear tells me t's near cyls 1 and 3.

Thanks much everyone. I appreciate the replies!

Had to edit and add this useless info:

I get 5MPG
Assuming it did better in it's younger years it may have a lifetime average of 6MPG
It's got 105,000 miles on it now
At 6 MPG it's used 17,666 gallons of fuel.
I'd say the fuel pump is getting a good workout.