bkarp@roadrunner.com 6 #1 Posted May 13, 2024 All of a sudden, my wheelhorse magnum 12 engine started running at full throttle ,even though linkage is hooked up and is at idle setting.,no carb adjustment was made.What could be the problem? Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,448 #2 Posted May 13, 2024 Did the throttle plate fall off the throttle shaft? That is about the only way to get max rpm with the throttle shaft at the idle position. Take the air filter off and look down the carb to see if the plate is still there. Share this post Link to post Share on other sites
bkarp@roadrunner.com 6 #3 Posted May 13, 2024 throttle shaft is loose on stamped top plate, junk China carb. thanks for the help,Brent Share this post Link to post Share on other sites
