idosubaru Posted August 4, 2012 Share Posted August 4, 2012 90,000 mile 1999 EJ22 heads. I have no reason to suspect bent valves, the lower end is bad but heads/timing were fine when I got it. When I fill the intake and exhaust ports with water some of the valves seep water. I realize this is not a good test...but Is this typical build up/wear of the valves/seats that any 100,000 mile motor would have? Or possible bent valves? When valves bend are they always obvious or can it sometimes be an amount you can't visually see? Quote Link to comment Share on other sites More sharing options...
Setright Posted August 4, 2012 Share Posted August 4, 2012 Valve test with water? I would have chosen "petroleum" - not sure what y'all call that chemical in the States. Anyway, it's quite possible that the valve seats are just dirty. A small amount of uneven soot build-up, can harden and cause minor leaks. Are the heads still in place? Quote Link to comment Share on other sites More sharing options...
idosubaru Posted August 4, 2012 Author Share Posted August 4, 2012 Valve test with water? Are the heads still in place? water just seemed simple. heads are off the engine. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 4, 2012 Share Posted August 4, 2012 Lap the valves - could have carbon debris in them from removal, etc. Retest with solvent in the ports if you have some. Generally water is not the best choice around valves and valve guides that are steel. GD Quote Link to comment Share on other sites More sharing options...
Crazyeights Posted August 4, 2012 Share Posted August 4, 2012 The seepage you see is probably on the exhaust valves, right? You might want to lap them and see if that helps. If they were bent it should be pretty obvious - fluid (I use solvent) would be leaking at a much more rapid rate. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted August 4, 2012 Author Share Posted August 4, 2012 Lap the valves - could have carbon debris in them from removal, etc. copy, that is what i was preparing for anyway, got the tools all ready for that. i guess most folks don't test this way so probably not much feedback on whether a little bit is normal or not. i have new valve stem seals too so i'll replace all of those and check them. Generally water is not the best choice around valves and valve guides that are steel.indeed! Quote Link to comment Share on other sites More sharing options...
Ricearu Posted August 4, 2012 Share Posted August 4, 2012 i have had them seep before lapping and none after. just did this on wife's car. deep creep ran through them like erm....water. lapped them and installed new valve seals and no more. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted August 5, 2012 Author Share Posted August 5, 2012 i have had them seep before lapping and none after. just did this on wife's car. deep creep ran through them like erm....water. lapped them and installed new valve seals and no more.great, thanks for sharing. i think i'll just lap them and see how it goes. so bent valves - always obvious or can they be "slightly bent"....like thousandths of an inch out that you can't visually see but would cause issues? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 5, 2012 Share Posted August 5, 2012 Depends on the engine. VW is notorious for exactly that because the valve stem necks down under the face for better flow. As s general rule Subaru's don't exhibit that behavior. GD Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.