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Engine dies when air cleaner is removed
https://www.slantsix.org/forum/viewtopic.php?t=65276		 Page 2 of 2
Author:  Reed [ Thu Sep 03, 2020 7:29 pm ]
Post subject:  Re: Engine dies when air cleaner is removed
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Vacuum leak somewhere
What’s your theory?
Old mechanics trick use your hand to choke off the air going into the carb if it smooths out it has a vacuum leak the air cleaner has the same effect.
Another old mechanics trick to clear the internal passages: get the engine running at high idle, put your hand over the carb throat briefly, vacuum sucks the passages clear.
Author:  Studebaker [ Fri Sep 04, 2020 1:16 pm ]
Post subject:  Re: Engine dies when air cleaner is removed
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You can also try plugging the emulsifier air bleed to see if that changes anything.
This is the small brass port opening you see when looking down the carb.
Use a wire size that mostly fills this hole and secure the other end of the wire to be sure it does not get "sucked-in" when the engine is started.
DD

Image
Thanks, I will try that tomorrow and reply.
No change. Tiny hole.
Author:  Studebaker [ Sun Sep 20, 2020 6:21 am ]
Post subject:  Re: Engine dies when air cleaner is removed
Solved! Replaced carb. Now it starts and runs without the air cleaner being in place. I had another carb on a parts car so I took it apart and soaked it in lacquer thinner, ordered a rebuild kit from Mike’s Carburetor, rebuilt it and adjusted it on the bench and “zoom” problem gone.
Thanks for your sharing of ideas. I don’t know what’s wrong with the other carburetor but sounds like it wasn’t cleaned properly by previous rebuilder and something in it is clogged.
Author:  neilskiw [ Tue Sep 22, 2020 7:29 pm ]
Post subject:  Re: Engine dies when air cleaner is removed
When you tear down the offending carb, it would be great to know what you have found...

Thanks.
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