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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Sorry for the delay. Need to know the N.A. WUR you have.

If one port on the top type WUR this needs to be connected below the throttle blade and has the check valve installed to prevent flow toward the WUR (allows VAC only).

If it has two ports, the bottom should be connected below the throttle plate and needs a check valve to prevent boost getting to the WUR. That means flow to the WUR is stopped. The twin ported WURs are described in the Bosch Repair Book is vacuum controlled full-load enrichment and full-load enrichment PLUS altitude compensating. Both types should have the top ported above the throttle (I think you have this one capped).
Old 04-17-2013, 02:39 PM
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