B.Liesberg Posted October 28, 2018 Share Posted October 28, 2018 I've found that I have a few induction leaks, I think the elbow shaped check valve right under the carb is part of the problem (sorry I don't know the correct term for it). Does anyone know where I can find a new or NOS one of these? Or is there a replacement part that works just as well? Link to comment Share on other sites More sharing options...
billorn Posted October 28, 2018 Share Posted October 28, 2018 Can you show us a picture? I dont think theres a check valve of any kind. Are you talking about the exhaust heat riser? The vacuum line? What year? More detail will get you a better solution. Link to comment Share on other sites More sharing options...
DonMicheletti Posted October 28, 2018 Share Posted October 28, 2018 Good sketch on page 139, Fig.6-47 in the shop manual for the '38 Link to comment Share on other sites More sharing options...
B.Liesberg Posted October 28, 2018 Author Share Posted October 28, 2018 I assumed the 320's were mostly the same. But it's a 39. Here is the valve And it attaches where that little brass plug is It's some sort of drain for gasoline or other liquids in the intake manifold. I assume it drains anything in there whenever the engine is shut down. I've just rebuilt the carb and replaced that valve with the brass plug seen in the second picture. Link to comment Share on other sites More sharing options...
MCHinson Posted October 28, 2018 Share Posted October 28, 2018 I am not aware of anyone reproducing them. I have never seen one that could not be cleaned up and reused without an issue. It should have a tube that attaches to it that drains any gas down below the exhaust system for safety. Link to comment Share on other sites More sharing options...
B.Liesberg Posted October 28, 2018 Author Share Posted October 28, 2018 It does have the tube, but it's hard to attach it to the car without the elbow also being attached Link to comment Share on other sites More sharing options...
DonMicheletti Posted October 28, 2018 Share Posted October 28, 2018 There is also a small bracket on a p-anj bolt that the tube goes through to hold the tube in place. If you ahve one, a soak in lacquer thinner should clean it up. With the throttle starter, it helps prevent flooding. Link to comment Share on other sites More sharing options...
B.Liesberg Posted October 29, 2018 Author Share Posted October 29, 2018 Link to comment Share on other sites More sharing options...
MCHinson Posted October 29, 2018 Share Posted October 29, 2018 I would soak the elbow in solvent to free up the checkvalve ball and after cleaning and drying it, simply reinstall it. I doubt it will cause a problem. There is not much about it that is likely to fail that a little bit of solvent won't fix. Link to comment Share on other sites More sharing options...
Larry Schramm Posted October 30, 2018 Share Posted October 30, 2018 Lacquer thinner works well. Link to comment Share on other sites More sharing options...
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