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Mart · 08-11-2016, 06:46 AM

1 No. It should seal. To be more exact, while the valve is technically open, (Vacuum draws it shut) there are no fuel passages that will leak through.
2, 7.5 I think
3, a 7.5 should be ok, the problem is elsewhere. (Actually altitude may play a part) 5.5 should work, I guess.
4, You can't test the operation, but you can check for leaks.

I'd be looking at the power valve seat, the radius and the gasket. Lots and lots of previous posts here on 94s running rich. You can get rich running for many other reasons, but as you have a static fuel drain problem, check those items I mentioned above, plus is the valve itself leaking through the diaphragm? the underside face of the diaphragm should not be wet.

Mart.

08-11-2016, 06:46 AM	#2
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 9,240	Re: More Power Valve Questions 1 No. It should seal. To be more exact, while the valve is technically open, (Vacuum draws it shut) there are no fuel passages that will leak through. 2, 7.5 I think 3, a 7.5 should be ok, the problem is elsewhere. (Actually altitude may play a part) 5.5 should work, I guess. 4, You can't test the operation, but you can check for leaks. I'd be looking at the power valve seat, the radius and the gasket. Lots and lots of previous posts here on 94s running rich. You can get rich running for many other reasons, but as you have a static fuel drain problem, check those items I mentioned above, plus is the valve itself leaking through the diaphragm? the underside face of the diaphragm should not be wet. Mart.