Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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33 Master Carburetor
#186664 10/20/10 07:40 PM
Joined: Sep 2010
Posts: 455
Burlington N.J.
Mike33 Offline OP
Backyard Mechanic
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Mike33
Backyard Mechanic
Joined: Sep 2010
Posts: 455
Burlington N.J.
My car seems to be hesitating on acceleration.I checked to see if the accelerator was squirting on acceleration and it is not.It actually feels like there is pressure when you try to operate the throttle.Could it be the pump jet is clogged? I know the leather pump cup is good.
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Re: 33 Master Carburetor
Mike33 #186669 10/20/10 08:25 PM
Joined: Nov 2001
Posts: 19,758
Likes: 64
The Great State of TEXAS
Chipper Offline
ChatMaster - 15,000
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Chipper
ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758
Likes: 64
The Great State of TEXAS
Since the pump jet is ~0.020" in diameter any piece of trash can plug it. It can be taken out or cleared by removing the screw plug above it and blowing back. If that does not work then a thin wire can be used to push out the blockage and then blow it clear. It takes a special screwdriver blade (with straight sides) to remove the jet.

How Sweet the roar of a Chevy four!
Re: 33 Master Carburetor
Chipper #186738 10/21/10 02:52 PM
Joined: Sep 2010
Posts: 455
Burlington N.J.
Mike33 Offline OP
Backyard Mechanic
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Mike33
Backyard Mechanic
Joined: Sep 2010
Posts: 455
Burlington N.J.
Just rebuilt the carburetor. I found that one of the check valves was stuck closed.Put a new kit in it and all is well!
Re: 33 Master Carburetor
Mike33 #186786 10/21/10 11:21 PM
Joined: Nov 2001
Posts: 19,758
Likes: 64
The Great State of TEXAS
Chipper Offline
ChatMaster - 15,000
Offline
Chipper
ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758
Likes: 64
The Great State of TEXAS
Glad you got it cleaned up and operating well.

How Sweet the roar of a Chevy four!
Re: 33 Master Carburetor
Chipper #186805 10/22/10 06:19 AM
Joined: Sep 2010
Posts: 455
Burlington N.J.
Mike33 Offline OP
Backyard Mechanic
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Mike33
Backyard Mechanic
Joined: Sep 2010
Posts: 455
Burlington N.J.
Thanks Chip

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