raboni Posted July 25, 2010 Share Posted July 25, 2010 I changed the spark plugs today and found some oil in each of the holes. What does that mean and should I be concerned? 2.5 non-turbo. Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted July 25, 2010 Share Posted July 25, 2010 Welcome the USMB. What year and model Subaru is the 2.5 in? How much oil was in the plug hole? Is this the DOHC or SOHC 2.5? Quote Link to comment Share on other sites More sharing options...
bratman18 Posted July 25, 2010 Share Posted July 25, 2010 Most likely means you need to change your valve cover gaskets and the grommets that go around the plugs as well. Quote Link to comment Share on other sites More sharing options...
nipper Posted July 26, 2010 Share Posted July 26, 2010 You have to change the bucket gromit and the valve cover gasket (subaru OE). Not fixing it will ruin the ignition wires. Quote Link to comment Share on other sites More sharing options...
raboni Posted July 27, 2010 Author Share Posted July 27, 2010 Do I need to drain the oil from the car to replace the valve cover gasket? Quote Link to comment Share on other sites More sharing options...
davebugs Posted July 27, 2010 Share Posted July 27, 2010 (edited) Do I need to drain the oil from the car to replace the valve cover gasket? No However anytime I have an engine "open" at all to the outside world I change the oil shortly after that. Liek I'll start it to look for leaks, let it warm up and change the oil. But I'm more paranoid than most folks (I prefer to think of it as thorough). Edited July 27, 2010 by davebugs adding comments Quote Link to comment Share on other sites More sharing options...
porcupine73 Posted July 27, 2010 Share Posted July 27, 2010 I like to wire brush around the valve covers as much as I can reach anyway and blow it down good with compressed air before removing the valve covers. Otherwise a lot of grit drops onto the valvetrain, at least for me. You can get the kit with the spark plug hole seals, valve cover gaskets, and if it it needs it, the bolt sealing washers. If enough oil builds up in the spark plug tubes it can also cause misfires. You don't need to drain the oil. You might get a little bit out when removing the valve covers, but draining the oil will make no difference there. Quote Link to comment Share on other sites More sharing options...
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