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Hey, 1999 Springer Softail original carburetor, 80 cubic inch Evo.. I've never seen this type of issue with the slide on a CV carburetor where the retainer for the diaphragm appears to be overheated and warped. Is there the possibility that this will affect the seal on the diaphragm and is this guy going to need a new slide because that part is not serviceable? You'll see the difference in the gaps in the picture that I posted.. The Gap all the way on the inside though seems to be pretty even, it's just the outer edge that supports the rest of the diaphragm.. Thanks...
Last edited by 98hotrodfatboy; Sep 5, 2025 at 07:38 AM.
I did hook vacuum Source up to the intake side of the carburetor and as I opened the throttle plate the slide did go up.. I'm not sure how many inches of vacuum my vacuum cleaner supplied but as I slowly cracked the throttle plate, I could see the slide Rising and once I got to about halfway open on the throttle plate the slide went up at least 75%.. I'll get it on the bike see how it runs and go from there.. If I have to I'll replace it..Thanks guys appreciate your advice..
Thank you for pointing that out I don't believe anybody drilled it out any bigger.. It did look like the one on the left with a smaller bleed.. I never really did much with CV carbs I always used S&S..
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CV40, Possible Slide Issues...
