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Joined: Jun 2021
Posts: 43
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2021
Posts: 43 |
Hi all, I took the top of carb off & poured gas into bowl about 3/4 way up for 3 nites & it`t mt in the am, did this cuz I have to pour gas in cold carb to start. I replaced power valve gasket, the only other things in the bowl are the main jets. Can a power valve leak? Also is the Power Piston assy supposed to move or is it rigid all the time, mine doesn't move. Thanks all !!
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Willwood Engineering
Wilwood Engineering designs and manufactures high-performance disc brake systems.
Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The power valve is controlled by vacuum and does move,None of the mentioned parts can leak.......but todays gas can evaperate very quickly.
Gene Schneider
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Joined: Jun 2021
Posts: 43
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2021
Posts: 43 |
Thanks for the reply Gene, It`s dumping so much fuel into intake manifold the plugs are all carboned up, are there check valve balls under the power valve or main jets that might be leaking? I tested again today & it lost 1/2 bowl in a 1/2 day, I had a cup full of fuel I use to fill carb bowl & it didn't loose any fuel??? Too weird, I`m going to plug the power valve & main jets just for the hell of it, I`ll keep you posted, thanks again.
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Joined: Feb 2004
Posts: 424 Likes: 6
Backyard Mechanic
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Backyard Mechanic
Joined: Feb 2004
Posts: 424 Likes: 6 |
The main jets and the power valve are both open when the engine is not running; but both have exit points above the fuel level in the bowl.
Todays fuel evaporates exceptionally quick.
Just for grins, I put one of the AFB Carters from my shop truck on the work bench for a test. Bowl was bone dry in 30 minutes.
Jon
Good carburetion is fuelish hot air
Owner, The Carburetor Shop (in Missouri)
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Joined: Jun 2021
Posts: 43
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2021
Posts: 43 |
Thanks Jon I guess I`m over thinking this, I pulled the top because I have to put fuel into carb initially in the am to get it started
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
A short squirt of carburetor cleaner should get the engine running. Might take a couple of shots to get the fuel bowl filled. Much easier than adding gas to the carburetor.
How Sweet the roar of a Chevy four!
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Joined: Jun 2021
Posts: 43
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jun 2021
Posts: 43 |
Hi All, another problem on my Rochester 2 Barrel, after installing a new needle & seat the brass float rubs on the side of the bowl. I have bent the tabs, etc, would it be safe to pinch the float to clear the side of the bowl? Thanks
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
I would not adivse it, could cause the float to fill with gas.
Gene Schneider
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