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Decel Valve Adjustment
May already discussed somewhere in this BBS but I could not find it.
Does anyone know how you adjust decel valve?  Thanks. |
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07-21-2003, 11:50 PM
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Join Date: Sep 2001
Location: Crestline, CA
Posts: 937
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I'm not aware that it is adjustable - it's just a vac valve that opens on deaccel to supply extra air for smog.
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"Inventor - Blue Flame 914 Seat Heater" "Yellow Rusty Cars Are Faster" _____________________________ '70 2.5 (I'll never finish it - Somewhere over the rainbow.....,) '73 2.0 (Just Not The Same) '74 2.0 (Heartless & Lungless) |
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07-22-2003, 05:15 AM
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The decel valve is adjustable. You loosen the locknut and turn the nipple adjuster to change the onset of operation. Problem is, what is the correct onset? I've never been able to get anyone on the list who has an NOS valve to measure it for us. I'd love to know.
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07-22-2003, 07:46 AM
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I measured mine just a couple of weeks ago. It opened rather quickly once it got to 18" on my vacuum guage.
(Well, on second thought...I should verify my notes on the 18"...) Last edited by RustyWa; 07-22-2003 at 11:30 AM.. |
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07-22-2003, 11:24 AM
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1973 Porsche 914 2.0L EFI
1970 Porsche 914 2.0L 
1975 Porsche 914 2.0L
