Lahti35 Posted June 9 Share Posted June 9 When I pulled apart the carb on my 1920 DB I found this fiber washer in this location when I unscrewed the top off the dashpot. I appeared to be keeping the sliding assembly from sitting all the way down on the carb body. I noticed when I got my carb gasket kit that it did not include a fiber washer of this size. The books don't really show gaskets well that I can see... is this a past "improvement" by someone? Link to comment Share on other sites More sharing options...
nat Posted June 9 Share Posted June 9 That looks like the metering valve. The dashpot serves as an acelerator pump and is on the bottom of the tube that screws into the part you have pictured. The two carbs I've taken apart are just the same only a little different. Your's may be yet another slight variation. Get rid of the washer if removing it allows the valve to make contact with the seat. Silversolder a ball bearing, (of the correct size), to an 1/8" wire and use that to lap the dashpot check ball seats with a slurry of abrasive cleaner such as Ajax or Comet. Valve lapping compound is too coarse. Link to comment Share on other sites More sharing options...
robert b Posted June 9 Share Posted June 9 (edited) There is no fibre washer in that area of the air valve , the head screws on the top of the tube . Bob Edited June 9 by robert b (see edit history) Link to comment Share on other sites More sharing options...
Lahti35 Posted June 10 Author Share Posted June 10 Thanks guys... I had a sneaky suspicion that washer wasn't paying rent. It's outta there! Link to comment Share on other sites More sharing options...
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