my uncle told me that i could check to see if i have bent valves by haveing the heads off the engine, then pour gasoline in the intake runner and exhaust runner making sure that i fill the runners past the valve to see if i have any leaks as long as the heads are fully assembled.

i did the check this way and nothing came out of the valves, so im thinking their good. what do you guys think?

 

sounds about right next to taking them to a shop to check out.

 

thats what i was about to do but my uncle (who does know alot about cars/motors) told me i could check this way.

 

then if your content with that answer, move on

 

Or you could do a leakdown test without taking the heads off. It's much easier. You can pick up a leakdown testing unit at autozone, etc. It's pretty straight forward. Or if you have a air hose fitting with spark plug threads you can thread it into one cylinder and pump compressed air into it and listen for leaks. It's not the most technical way, but it will tell you if you have something really messed up.

 

the heads are already off.

 

well, technically its still possible to have bent valves but still have them sealing OK when closed. I'd say if they seal well and they don't seem to bind at all when moving up and down in the valve guides, your OK. Otherwise you could pull them and roll them on the edge of a glass table and see if they wobble.

 

Just letting gas sit on the valves doesn't test much unless it's a fairly big problem with sealing. Think about the pressure inside the chambers exerted on the valves and think about the pressure exerted on them from just gas sitting on them; not quite the same.

 

pressure from the chamber would assist in the sealing process.

If you roll them on a table, make sure they are free from carbon first