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Leaking carburetor

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Old May 23, 2020 | 08:13 PM
  #1  
podiatra's Avatar
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From: Harlingen , TX
Car: 1986 Camaro IROC-Z
Engine: 350 swap
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Leaking carburetor

I have Holley 670. This morning, i recheck the primary bowl level and the secondary bowl level to double check before adjusting. I also Replace a new gasket on my Gas cap and disconnect and reconnect the tubing of egr solenoid for better routing. I proceded to Turn on the car and it Choked, like if battery is failing. Sound like the engine was stuck and not turning at the beginning. After few attempts, finally came on, and it has rough idling. It doesn’t stay on unless i am on the gas, otherwise is stalls.
I noticed that there is a fuel running along the secondary diaphragm rod with engine off and gasoline odor is pretty bad

I am not sure if I damage something, but I only check things, nothing else. Any recommendations? any help is appreciated.
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Old May 24, 2020 | 08:55 AM
  #2  
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Car: 1986 IROC Z
Engine: 5.0 TPI
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Axle/Gears: 3.23 Posi
Re: Leaking carburetor

Originally Posted by podiatra
I have Holley 670. This morning, i recheck the primary bowl level and the secondary bowl level to double check before adjusting. I also Replace a new gasket on my Gas cap and disconnect and reconnect the tubing of egr solenoid for better routing. I proceded to Turn on the car and it Choked, like if battery is failing. Sound like the engine was stuck and not turning at the beginning. After few attempts, finally came on, and it has rough idling. It doesn’t stay on unless i am on the gas, otherwise is stalls.
I noticed that there is a fuel running along the secondary diaphragm rod with engine off and gasoline odor is pretty bad

I am not sure if I damage something, but I only check things, nothing else. Any recommendations? any help is appreciated.
First thing to check would be the float levels in both bowls. If gas pours out, the needle/seat is likely to be stuck or dirty.
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Old May 24, 2020 | 01:57 PM
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podiatra's Avatar
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From: Harlingen , TX
Car: 1986 Camaro IROC-Z
Engine: 350 swap
Transmission: manual
Re: Leaking carburetor

Thanks! If i lower the float, does the fuel level goes up?
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Old May 24, 2020 | 02:01 PM
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Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Leaking carburetor

Originally Posted by podiatra
Thanks! If i lower the float, does the fuel level goes up?
No, it goes down...
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Old May 24, 2020 | 05:28 PM
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Re: Leaking carburetor

If your particular carb doesn't have the "blowout protection" option, your power valve may be toasted.

CW on the float adjuster nut lowers it.
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Old May 24, 2020 | 05:45 PM
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Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: Leaking carburetor

Originally Posted by sofakingdom
If your particular carb doesn't have the "blowout protection" option, your power valve may be toasted.

CW on the float adjuster nut lowers it.
Those Street Avenger 670 carbs have the blowout protection...
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Old May 24, 2020 | 06:06 PM
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From: Harlingen , TX
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Engine: 350 swap
Transmission: manual
Re: Leaking carburetor

Got it!
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Old May 24, 2020 | 07:12 PM
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Re: Leaking carburetor

I also noticed the choke butterfly sticks if open completely
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