It probably just needs a head gasket, they normally should be replaced at around 100k. Mine cost like $950 including labor back in 2009 so YMMV. Timing belt, water pump, and head gasket would be the main parts Id look into. You dont have to rebuild or replace the engine, thats like buying a new jacket because one of the buttons fell off. You can actually do the head gaskets with the engine in the car, Ive seen several gas station mechanics do it that way. If youre pulling the engine Id probably replace the clutch and pressure plate too.


FYI there are also two stickied threads at the top of this subforum that directly deal with your issue.

 

I really dont recommend doing the head gaskets in the car, especially if it's your first time. Something will go wrong and it will not be a good time and you'll wish you'd pulled it.

Do a head gasket service, new timing belt and water pump, belt is due at 105k anyway so.... it's time, while you're in there it would be a good idea to replace rubber hoses, especially ones that have gotten oil on them. Mainly the pcv hose off the block and the water pump bypass elbow are the ones that fail.. If it's running hot you should also replace the radiator to cover your ass.

Supposedly a local tech can have an EJ25 out in 26 minutes, but I find that hard to believe, I'm very efficient and it takes me 45-60m to have the engine on a stand. the new chain motors are even easier, I say "EJ's are on a zipper, FB's are on velcro". As a novice you should expect it to take you 2-3 hours to get the engine out, not counting time to find tools/run to the store for whateverthefuck you need.

 

Thanks for the responses!! I had looked at the stickies for the head gasket but did not see the information I was look for. The engine will be removed and cleaned etc. and the trans refreshed so it wont be an "in situ" job for us. With that said, is it common to remove the front fascia or do most people remove just the radiator only? What is common?

@silverton what is the process for you and at 100K miles do you crack block and have it machined and replace the bearings and rings? Any special considerations in this? What is your $0.02?

 

at 100k if the engine sounds fine, I would leave the block alone. if you were at 150k+ I may recommend it, 200k... definitely, but that's all dependant on how the motor sounds. if you're using a cherry picker taking the front bumper off will allow you some extra room, I never bothered doing that but I didn't really care about the front bumper either. remove the radiator and fans and there is plenty of room. raise the transmission about 1.5-2" for clearance after the motor mounts and pitch stop are disconnected when you're ready to remove the engine from the bay.