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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Mar 2014 Posts: 161 Shop Shark | | Shop Shark Joined: Mar 2014 Posts: 161 | I'm rebuilding a rochester B carburetor. The power piston is stuck in it's hole in the float bowl cover. Is this intentional or is it just stuck and I need to free it up?I tapped it with a screwdriver handle and gave it a small tug with pliers but it doesn't budge. I sprayed it with carb cleaner and let it soak. Does this thing have to move or is it possible it was set stationary at the factory?---Jack | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy CJSTP, the power piston must be able to move in order for the carburetor to function as designed. It should pull out of the bore it is in, try not to bend the shaft as you attempt to remove it, it must line up with the valve it activates once installed, good luck with the removal. | | | | | Joined: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | Those things can stick good. I was able to gently tap mine and used an oil to un-stick it. When I had it out I used some 600 grit sand paper and my drill to polish it. Some times it just takes time.
Steve H
| | | | | Joined: Mar 2014 Posts: 161 Shop Shark | | Shop Shark Joined: Mar 2014 Posts: 161 | I worried it a little harder with needle nosed visegrips and it finally came loose. Cleaned up the bore with a brass brush from a gun cleaning kit.---Thanks,I didn't want to break this carburetor.---Jack | | |
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