carbking -

Thanks for the info.

> Anyway to tell if the power valve is open in my Rochester B while it is on the engine without taking off the airhorn?
> If it is always open, will it damage the engine?

Originally Posted by carbking
The Rochester type B will eventually warp due to insufficient screws holding the airhorn to the bowl. This will cause the power valve to always be open, and the engine will run extremely rich fouling plugs, washing oil from rings, and extremely low fuel mileage.
'54 3104
'54 235 w/'59 head
Rochester B (no tag, just casting numbers)
New NAPA rebuild kit a year or two ago
Carb oozes a little gas
Non-ethanol gas
Never checked the mileage - probably over 12MPG
Engine runs good
Plugs are soft black
Less than 1,000 miles/yr

- Lonnie
My '54 3104
Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post.
lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt.

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