Colejr Posted March 24, 2014 Share Posted March 24, 2014 I have a 1991 gtr and there's like a lumpy noise coming from the muffler sounds as if there's a train running over some tracks in my exhaust, anyone had this happen to their gtr before? Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/ Share on other sites More sharing options...
Jazzadub Posted March 24, 2014 Share Posted March 24, 2014 (edited) Just a guess, but maybe the muffler packing got blown out? Does the car run fine apart from the noise? Does it get louder and/or faster with revs? Edited March 24, 2014 by Jazzadub Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7237505 Share on other sites More sharing options...
Ben C34 Posted March 24, 2014 Share Posted March 24, 2014 Muffler is screwed. Can't be fixed online . 1 Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7237509 Share on other sites More sharing options...
Sinista32 Posted March 24, 2014 Share Posted March 24, 2014 cats guts in muffler Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7237589 Share on other sites More sharing options...
Colejr Posted March 24, 2014 Author Share Posted March 24, 2014 It has a test piece so no cat Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7237900 Share on other sites More sharing options...
Colejr Posted March 24, 2014 Author Share Posted March 24, 2014 It can Mainly hear it at idol, car doesn't run fine, I'm thinking the turbos are bad. Could this be a sign that the exhaust wheel is about to go? Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7237901 Share on other sites More sharing options...
scotty nm35 Posted March 25, 2014 Share Posted March 25, 2014 You will need to drop the exhaust and see what the problem is. Perhaps the idol will fall out when you shake it, or perhaps it will be the turbine wheel... Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7238223 Share on other sites More sharing options...
Anfanee Posted March 25, 2014 Share Posted March 25, 2014 Bearings. As mine just did. /thread. Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7238226 Share on other sites More sharing options...
Colejr Posted March 25, 2014 Author Share Posted March 25, 2014 That's what I was thinking, I'm pulling the turbos off within the next few days, it's pretty damn cold here so I'm just putting in an hour after work. Link to comment https://www.sau.com.au/forums/topic/440954-lumpy-noise-from-exhaust/#findComment-7238232 Share on other sites More sharing options...
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