SVX_commuter Posted September 16, 2008 Share Posted September 16, 2008 I am wishing someone could tell from their experience about a noise I hear from the engine. When the engine is cold it sounds fine. After it warms up there is a consistent rumble noise. Kind of low frequency and sounding similar to a lot of air moving, sort of like a lions roar. At idle when its hot it is not real loud and as the engine speed picks up it get louder. When I took off the oil filler cap I could here the rumble roar inside the filler pipe. So it is inside the engine. Any ideas? It is a 94 Legacy 2.2 with about 167k miles. It seems to run okay, has pick-up and has power. I took off the hose to PCV. The face of the PCV is all crapped up with black carbon. Looks like the PCV is clogged up a lot. The exhaust looks clean no smoke. The oil pan has the bottom pushed up and I just mention that. The blow-by out of the crankcase I checked with the hose off the PCV. This seemed a little higher than other Subaru engines I have checked and the flow looked clean. The flow went away when the engine speed pick-up. Peace John Link to comment Share on other sites More sharing options...
screwbaru2 Posted September 16, 2008 Share Posted September 16, 2008 I'd change that PCV and make sure the hoses are clear. Can't say it'll make the noise go away but the engine will run even better! Link to comment Share on other sites More sharing options...
SVX_commuter Posted September 16, 2008 Author Share Posted September 16, 2008 Yeah I hear you on that! I am still wishing someone will tell us about the ROAR......... Link to comment Share on other sites More sharing options...
njdrsubaru Posted September 16, 2008 Share Posted September 16, 2008 The oil pan has the bottom pushed up and I just mention that. i had a oil pan dented and some strange noise in the engine after it happened... then a few months down the road the engine seized... when i took the oil pan apart i came to a realization that when the oil pan got dented it pushed the oil pickup tube upwards pinching it, therefore not supplying enough oil to the engine and leading to the seize due to no lube... now how far up in NJ are u, i could take a look at it for ya Link to comment Share on other sites More sharing options...
SVX_commuter Posted September 16, 2008 Author Share Posted September 16, 2008 That is very considerate of you! Thanks! The car is in Broadway NJ at a garage. 78 west to 31north clinton to washington and then west on 57 I could go get some pictures of the pan and e-mail them. I am not sure how to post here except in my locker. I have a used 2.2 in my basement with a good pan. Link to comment Share on other sites More sharing options...
njdrsubaru Posted September 16, 2008 Share Posted September 16, 2008 oh yeah i know where that place is, i live din belvidere for 6 months i lived in so is the guy taking care of the engine for you? meaning.... is he replacing it? Link to comment Share on other sites More sharing options...
SVX_commuter Posted September 16, 2008 Author Share Posted September 16, 2008 Well we not discussed that yet. I would like to get the car for less! Even if runs for a month or so that would be good. My son wants to learn to drive a 5spd. Link to comment Share on other sites More sharing options...
njdrsubaru Posted September 16, 2008 Share Posted September 16, 2008 oh u are buying a car from him, ok ok gotcha... Link to comment Share on other sites More sharing options...
SVX_commuter Posted September 16, 2008 Author Share Posted September 16, 2008 (edited) I was just talking with a guy I know at a garage. He says that any decrease in oil pressure shows up in tapping lifter noise. Do you remember the lifters tapping on your engine? Says the rod bearings go first before the main bearings and then the engine knocks loud. This engine does not sound like that. The other possible problem is the oil level maybe high. Can that make this noise? Edited September 16, 2008 by SVX_commuter Link to comment Share on other sites More sharing options...
njdrsubaru Posted September 16, 2008 Share Posted September 16, 2008 strange enough i did not have any warning noise or signs when it seized Link to comment Share on other sites More sharing options...
SVX_commuter Posted September 16, 2008 Author Share Posted September 16, 2008 The oil inlet tube to the pump, was it cracked? Do you think it was pulling air thru the crack? This air entrainment may not have been low enough to drop the pressure and turn on the oil light but would have put air and oil to the bearings. That is not good for bearing lubrication. Did your rod bearings go? Link to comment Share on other sites More sharing options...
njdrsubaru Posted September 16, 2008 Share Posted September 16, 2008 yeah pretty much what happened to that engine was that it threw a rod, hitting the block and making a huge hole.. it wasnt pretty... it was right when i was accelerating from a traffic light too, it was nasty and embarrassing, lol Link to comment Share on other sites More sharing options...
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