Lifter keeps failing.

[Frank Ennis]

Hi everyone,

I have a 70 F100 flare side. It has a 352 out of a 65 Galaxy and a C6 trans. One of my lifters has failed twice and the old one o pulled out was not marred or bent. My question is how do I clean the oil passages without removing the engine?
Also what is the best budget priced power brake conversion as well as disk for the front end?

Thanks in advance.

[jzjames]

I have run a bottle of Mystery Oil in the oil to try to free up sticky lifters. It did seem to help.
I would think it might also help to clean oil passages, cant hurt.
Just add a bottle to your oil and run it for a few hundred miles, then change your oil.

[Frank Ennis]

I did try diesel fuel but it didn't work. My next step was either sea foam or Marvel Mystry oil.

[Frank Ennis]

After removing the valve cover I found that the push rod was bent. I am goingnto rebuild the entire engine. What is a good company to buy a full rebuild kit from? I want good power but nothing crazy.

[jzjames]

When I did my new set of lifters that was having the same problem, I got them from Rockauto.
You could try just swapping out lifters and pushrod for a quick fix.

[Fraser]

Running old gas can cause pushrods to bend, if you revived a dormant engine, that may be what happened. Even a little old, mixed in with the new could cause a valve to stick, it should all be flushed.

[Frank Ennis]

There is a good amount of carbon on the pistons. I may try to rebuild the heads with new valves and springs as well as flush the entire engine.

Is it worth rebuilding the heads or should I get new ones?

What should I flush the engine with and how?