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Weber Whistle
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VuDu66
New User
| Posts: 6
| Joined: 03/11
Posted: 11/11/11
10:58 AM
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I have a '90 Wrangler with a 258ci. I have a Weber 34/36 DGEC installed on it about a year ago. I has be running great til about 2 months ago I started hearing a whistle, I open the hood and could hear it coming from the carb. I looked for loose hoses, vacuum line and found none. This whistle is happening at idle and while driving, but it is not happing all the time. I just did a rebuild kit on the carb and I still have the whistle. There are no lose hoses or lines. Any ideas?? 
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Posted: 11/12/11
12:49 PM
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Sounds like the carb gasket. Replace the gasket under the carb to intake and torque it to spec.
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VuDu66
New User
| Posts: 6
| Joined: 03/11
Posted: 11/15/11
09:46 AM
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I did that and still have the whistle.
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KidCurry3
New User
| Posts: 3
| Joined: 09/12
Posted: 09/10/12
11:13 PM
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You most certainly have a vacuum leak. Start up the motor and spray around the intake and the carb and when the idle jumps up you will find the leak. I have an 89 yj 4.2 carb with the weber, I have the same issue and I found I need to replace the intake manifold gasket and the carb baseplate gaskets are leaking.
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Posted: 09/15/12
06:45 PM
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Check to see if it is coming from the PCV.
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