nads Posted December 19, 2016 Share Posted December 19, 2016 That is odd. I wonder if during the belt change the valve hit the piston? But there are two and they should open at the same time. The other is ok? Any marks on the piston top like it got hit? Link to comment Share on other sites More sharing options...
ehsnils Posted December 19, 2016 Share Posted December 19, 2016 We all want to see pics of the disaster. Link to comment Share on other sites More sharing options...
FLlegacy Posted December 20, 2016 Share Posted December 20, 2016 That is odd. I wonder if during the belt change the valve hit the piston? But there are two and they should open at the same time. The other is ok? Any marks on the piston top like it got hit? It seems the valves or something affecting the valves is a common enough issue with the 5th gen. Link to comment Share on other sites More sharing options...
Shadow_419 Posted December 20, 2016 Share Posted December 20, 2016 UPDATE....having followed up with the mechanic, he has now verified the Timing is ok and did not shift; since he nearly gave me a heart attack with the initial diagnosis, i went over and looked for myself and now have to direct traffic. so...with the coil on #1 replaced and still running like crap, checked compression on all cylinders; #1 cyl had none. Removed the head and the exhaust valve is broken! As of now, both heads will be checked, valve repaired, etc. God i hope this isn't what's going on with mine. It's been a driveway queen for a few weeks since I don't have the money or time to get into it for another week or two. Link to comment Share on other sites More sharing options...
FLlegacy Posted December 21, 2016 Share Posted December 21, 2016 If I was you I would be hoping it was only a valve, lol. A headgasket set and a couple days to work on it and you would be good to go. Link to comment Share on other sites More sharing options...
Thors Twins Posted December 23, 2016 Author Share Posted December 23, 2016 has anyone ever heard of, or seen, valve guides "pop" out? Link to comment Share on other sites More sharing options...
YeuEmMaiMai Posted December 23, 2016 Share Posted December 23, 2016 it can happen if you use lots of cheap gas. It is a known issue on Subarus Link to comment Share on other sites More sharing options...
GTEASER Posted December 23, 2016 Share Posted December 23, 2016 Wow, great video! GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
nads Posted December 23, 2016 Share Posted December 23, 2016 Not in the Mopar and Ford's I've built. I wonder if it because of the thermal expansion of the aluminum head vs the steel guides if the press isn't tight enough that it could fall over time and use. Or a valve stem seal is not allowing sufficient lubrication to the valve stem and it slowly works its way down. If you take the heads off and have them rebuild, get them all checked out. Does Subaru use valve rotators? Link to comment Share on other sites More sharing options...
ehsnils Posted December 24, 2016 Share Posted December 24, 2016 Seems like we should have a list of stuff for people to check whenever there's a misfire, and now time to add the valve guides to the list. Link to comment Share on other sites More sharing options...
Thors Twins Posted December 24, 2016 Author Share Posted December 24, 2016 Motor all boxed. up...vagreed,valve guides to be added to the misfire symptom list Sent from my SM-G920T using Tapatalk Link to comment Share on other sites More sharing options...
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