valves sticking

[lx93f22a6]

i was wondering if anybody knew a possible way to get my valves from not sticking.
when it idles the engine shakes very bad, but once i rev the engine up to about 2k rpms its smooth as can be. only the valves on cyl 4 are sticking tho.

[Ghetto_CB7]

umm

Just curious on how you came to this conclusion? From the description it sounds like an idle or timing problem.

I'm not saying you are wrong, I just want to know the steps you took to verify your cylinder #4 valves are sticking. Which is the cylinder closest to the distributor correct?

Also which valves, intake or exhaust?

[lx93f22a6]

it does sound like a spark issue, but when i removed the head for a head gasket i noticed that the exhaust valves on cyl 4 were not closing all the way but would close. i was going to replace the seals which i have but have not got the chance to replace. might not be the seals but i also have an extra pair of valves from a previous f22a build. just wondering if there would be another easier solution to try.

[Ghetto_CB7]

hmmm

it is possible that your valves are sticking open, but to verify that it is something with that cylinder and not just something external I would do a compression test.

if you think they are stuck open quite a bit you can unplug the distributor and do ghetto compression test.

with the distributor unplugged turn the car over with the ignition 4 times. If all of them happen evenly and the same sound is heard you passed the ghetto version of the test.

A real comp test is preferable, but I have used that little guy in the "field" literally to diagnose a bent valve before.

replacing a valve is a lot of work if its not the problem lol.

[GhostAccord]

x2 on compression test. A leak down test would be more accurate though. Then if you find that they are sticking open. I would imagine that you could do a valve adjustment. Could be that the valve adjustment maybe a wee bit tight on those valves. Or did you already do a valve adjustment when you replaced the head gasket?