oneshort 5 #1 Posted April 17 Guys,is there a tiny hole in this acceleration valve and if so WHERE?? Thanks Share this post Link to post Share on other sites
Pullstart 70,317 #2 Posted April 18 What tractor is that out of? It might help with details of the part. Share this post Link to post Share on other sites
953 nut 67,034 #3 Posted April 18 That appears to be the cap that retains the acceleration valve on a Sundstrand, I do not think it has any penetration to the outside. Our subject matter expert on Sundstrand is @daveoman1966, he should be able to answer this. Share this post Link to post Share on other sites
Handy Don 16,834 #4 Posted April 18 An acceleration valve would not have any exposure to atmospheric pressure (i.e. an “outside” opening). Its operation relies on the differences between two internal pressures, and a spring. Small engine, float-bowl carburetors do have a “vent” to prevent a buildup of air pressure in the bowl from affecting the carefully metered delivery of fuel to the throat. Share this post Link to post Share on other sites
pfrederi 20,783 #5 Posted April 18 No hole in the end cap. There are holes in the internal valve sleeves especially in piston to piston units 1 Share this post Link to post Share on other sites
