Logan Posted August 31, 2016 Share Posted August 31, 2016 Just noticed my EGR valve and the port itself are completely clogged with rock solid carbon deposit. any ideas on what i can do about this? (buying a weber and blocking off the emissions aren't an option right now) Was also wondering if these larger diaphragms on the old Aisan carb are replaceable? This one appears to be shot but none of the rebuild kits i can find include the larger diaphragm. Quote Link to comment Share on other sites More sharing options...
zero Posted September 2, 2016 Share Posted September 2, 2016 That large diaphram is what opens the secondary venturi on the carb. E.g. it is what makes it go from being a "one barrel to a two barrel." Last time I needed on I got it for $10 at NAPA. Quote Link to comment Share on other sites More sharing options...
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