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> de-acceleration valve, 914 2.0L
hookrah
post Jul 27 2011, 03:01 PM
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Does the 73 2.0 L need the de-accelerator valve to operate correctly? What problems, if any, may occur without it?
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Rand
post Jul 27 2011, 03:18 PM
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No. It allows extra air into the intake on deceleration as an emissions control function. The 70-71 cars didn't even have one.

I've never ran with one and never had any problems, or noticeable differences in running. It eliminates one more thing that can go wrong.

Some may argue that it is easier on the MPS diaphragm with one.
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type47
post Jul 27 2011, 08:12 PM
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QUOTE(Rand @ Jul 27 2011, 01:18 PM) *

Some may argue that it is easier on the MPS diaphragm with one.


I heard/read that too. Interesting that an L-jet also has a decel (and no diaphragm).
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