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Old 06-23-2025, 10:23 AM   #1
Lenny Bruce
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Default Cracked Carburetor
Good day all! I noticed this morning that my Zenith Carburetor has a crack in it.
The crack starts at the air intake where the air maze would go in towards the choke butterfly. It stops before the butterfly. My question is can this cause it to suck unnecessary air? I’m thinking the air comes in from their but wasn’t sure that would cause an issue! Most likely caused by years of someone over tightening the air maze.
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Old 06-23-2025, 12:07 PM   #2
nkaminar
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Default Re: Cracked Carburetor
It should not effect performance. No extra air. If you are concerned about the crack progressing, keep your eyes open for a replacement to change out in the future.
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Old 06-23-2025, 12:20 PM   #3
Herb Concord Ca
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Default Re: Cracked Carburetor
If worried about an air leak, seal with JB-Weld.
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Old 06-23-2025, 04:14 PM   #4
Gary WA
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Default Re: Cracked Carburetor
Quote:
Originally Posted by Lenny Bruce View Post
Good day all! I noticed this morning that my Zenith Carburetor has a crack in it.
The crack starts at the air intake where the air maze would go in towards the choke butterfly. It stops before the butterfly. My question is can this cause it to suck unnecessary air? I’m thinking the air comes in from their but wasn’t sure that would cause an issue! Most likely caused by years of someone over tightening the air maze.
What zenith is it? I may have one you can have! And just replace the bottom, with your jets etc.? Where do you live state?
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Old 06-23-2025, 05:21 PM   #5
Lenny Bruce
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Default Re: Cracked Carburetor
I’m in upstate NY. I have a few spares thank you for the offer. I just would like to be sure this one isnt going to cause any issues
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Old 06-26-2025, 02:03 PM   #6
Ed in Maine
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You can look at this situation this way, the pressure on both sides of the crack is the same. If there is no pressure drop across the crack, there can be no flow through the crack. Ed
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Old 06-28-2025, 07:36 PM   #7
ModelA29
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Default Re: Cracked Carburetor
Drill a small (1/16") hole at the end off the crack to keep it from going further. Also works for fender tears.
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