Colorocko Posted December 30, 2009 Share Posted December 30, 2009 Not a knocking but it sounds like the muffler is not connected. I'm thinking it is a head gasket - not seeing any water in the oil . . . Coming from the driver side . . . . It is very loud. How do I ID what the problem is? Thanks, Colorocko Link to comment Share on other sites More sharing options...
Bdubs Posted December 31, 2009 Share Posted December 31, 2009 Header cracked? Or possibly some part of the exhaust system after the header is rotted. It happens. Solution? Find some used headers, and have a shop fab up a whole new exhaust system from the cat to the muffler. Link to comment Share on other sites More sharing options...
Platinum_Racing Posted December 31, 2009 Share Posted December 31, 2009 Exhaust. Get under the car and see if you can find where the leak is. Carefully hover your hand above the exhaust pipes and feel for any warm air. DO NOT TOUCH THE PIPE. These cars go through exhaust piping like fat kids go through cake. Link to comment Share on other sites More sharing options...
Platinum_Racing Posted December 31, 2009 Share Posted December 31, 2009 Exhaust. Get under the car and see if you can find where the leak is. Carefully hover your hand above the exhaust pipes and feel for any warm air. DO NOT TOUCH THE PIPE. Having a buddy plug the tail pipe with a rag will make it easier to detect where the leak is coming from. Chances are one of the exhaust pipes has cracked, usually somewhere in the vicinity of a weld. These cars go through exhaust piping like fat kids go through cake. Part of the reason is because they don't have flex pipes to allow for movement of the engine in every direction. Instead the exhaust pipe is flanged with a matching coupler and a spring loaded clamp that is supposed to allow the pipe to move without stressing other pipes. This system sucks, and can cause old rusty pipes to just break right off. Link to comment Share on other sites More sharing options...
Bdubs Posted December 31, 2009 Share Posted December 31, 2009 Ill agree, they always rot out at the joints. Every old subaru i have owned rots at the midpipe muffler connection. Many 1st gens headers crack too, so replacing it all will ensure you wont be under there again for a while. Link to comment Share on other sites More sharing options...
ehsnils Posted January 2, 2010 Share Posted January 2, 2010 Cracked headers has a long history on Subaru's. I suffered from that on my first '82 too. Link to comment Share on other sites More sharing options...
Platinum_Racing Posted January 3, 2010 Share Posted January 3, 2010 That too. On my '92 I've already replaced the muffler, the muffler pipe section, the intermediate pipe (After the second cat), and I still have leaks in my headers and the first catalytic converter. Link to comment Share on other sites More sharing options...
Colorocko Posted January 4, 2010 Author Share Posted January 4, 2010 Found it . . . . One of the spark plugs came out . . . wow Easy fix - - just put it back and mad sure it is tight this time. Thanks for all your input . . . Link to comment Share on other sites More sharing options...
ehsnils Posted January 5, 2010 Share Posted January 5, 2010 - just hope that you didn't blow the threads too bad. Link to comment Share on other sites More sharing options...
Platinum_Racing Posted January 8, 2010 Share Posted January 8, 2010 Yeah... Wow. If that happened to me I'd be complaining about a dramatic loss of power and some nasty vibrations rather than a dreadful noise. If it happens again you have a (Semi) big problem. It is possible to retap the spark plug threads in a cylinder head with moderate success, but it's pretty much like putting a Band-Aid on a cut that requires stitches. Link to comment Share on other sites More sharing options...
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