Andy Moltu Posted July 6 Report Posted July 6 On 6/25/2026 at 12:11 PM, Ken F said: I found #4 manifold metal sleeve was a bit loose when I put the rubber sleeve joint on. I wiggled it and it came out, I cleaned and degreased it and will put back with locktite. I wonder if this could be the cause of the vacuum reduction when I put the heavy plenum on. I’ll report back after I’ve let it harden for 24 hours. ken No. It’s on the external side of the manifold (before the butterflies) so should be pretty much at atmospheric pressure. Quote
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