What if your valve lifters were contaminated by blowen head gasket how do you clean them?

Answer 1

The lifters have some pretty tight tolerances to make them work.

Some have a snap ring on top of the plunger. Take them apart ONE AT A TIME and wash with solvent.

If they have no snap ring, try running carb cleaner through the hole in the side and out the top.

Some lifters are not too expensive (about $10/apiece) so you might think about replacing them.

Others are not too hard to change, so you might get by putting them back in and changing the noisy ones if you have to.

If they're just full of mayonaise oil, put them back in. Normal pressurized oil flow will clean them out.

If they sat too long and rusted, you should bite the bullet and replace them. I see a lot of engines with blown head gaskets that sat for awhile full of water. Some need total rebuilds due to rust and pitting of close tolerance parts, but could have been done cheaply if the rust had not started. The water/antifreeze by itself is not really the issue.