Povertycove Posted June 5, 2019 Share Posted June 5, 2019 My 37 is starting hard and running rough. I noticed that there is some oil/smoke coming from the exhaust manifold, from the second joint of the three part system. Before I start dismantling everything, could a leak like this be causing the rough running engine, or should I be looking for stuck valves? Link to comment Share on other sites More sharing options...
car fox Posted June 15, 2019 Share Posted June 15, 2019 carfox Try doing a compression check, and check for a stuck heat riser (located in exhaust manifold) or a clogged exhaust system. 2 Link to comment Share on other sites More sharing options...
c49er Posted June 16, 2019 Share Posted June 16, 2019 Those 323 three piece exhaust manifolds tend to break too.. 1 Link to comment Share on other sites More sharing options...
36 D2 Coupe Posted June 19, 2019 Share Posted June 19, 2019 Airflow Club of America has molds for making the center box on those manifolds. Look up John Librenjak as he is working on a project to reproduce them. Good luck. Link to comment Share on other sites More sharing options...
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