Hi all..this is a first post for me. I am rejuvenating an 86 Aspencade that only has the air cut out valve on the underside of the intake plenum (no other pollution control stuff). It has good compression (180 to 190 psi) and runs smoothly at idle after warm up and appears to have good power without hesitation. Starting required full choke and some coaxing as if there was an air leak somewhere, and there was some misfiring during the first couple of minutes of warm up. Having read that the air cut out valve might cause these symptoms I purchased a kit to renew it. The kit contains 3 pieces; the diaphragm, a spring, and a small rubber ring of rectangular cross section...not an o-ring.
My question is...where does the rubber ring go? There was not one in the valve when I opened the cover. The instructions that came with the kit say to refer to instructions in a repair manual (Haynes, Clymer, Honda etc.) The Haynes manual says nothing about there being a rubber ring and the Honda parts diagrams that I have found online do not list such a part. I contacted the vendor (the source of an old article detailing the problem) and they don't know either since the author of the article is gone now.
The ring does fit well on the nipple of the valve, and would perhaps function to limit the amount of lateral movement if the diaphragm caused some tilting of the nipple during operation. However the tilting would have to be quite severe to have the ring contact the side of the bore it moves within. There does not appear to be any location in the valve housing requiring a rubber seal.
It will probably run without the rubber ring installed and perhaps it is not needed on this model, but any insight would be much appreciated. Thanks.
