seven 202 #1 Posted May 28, 2016 my suburban 400 runs good .. but on fast rpm I cannot keep it from pulsing high too low rpm;s it does have a new carb and ive adjusted both the low and high mixture screws but just can not seem too get rid of problem? Share this post Link to post Share on other sites
N3PUY 1,031 #2 Posted May 28, 2016 Sounds like the "high speed" needle needs opened a little bit more. Share this post Link to post Share on other sites
seven 202 #3 Posted May 29, 2016 I don't think it's a carb issue anymore. I'm thinking it's a spring going to the governor or ?? I know lots looked at my issue but not anything much for suggestions other than adjust carb. Something is causing it to go from high to low rpm s I just don't think its the carb Share this post Link to post Share on other sites
dells68 7,494 #4 Posted May 29, 2016 Loosen the nut on the governor arm. Turn the governor shaft as far as possible counterclockwise. Pull the governor arm back as far as possible and retighten. Might just be out of adjustment a little. Share this post Link to post Share on other sites
seven 202 #5 Posted May 29, 2016 Alright will try thxs Share this post Link to post Share on other sites
dells68 7,494 #6 Posted May 29, 2016 Mine wanted to race all the time when I first got it - doesn't take much to get the governor out of adjustment. Hope that helps your problem. Share this post Link to post Share on other sites
seven 202 #7 Posted May 29, 2016 Oh whatever I just did fixed it I think the spring was a little wore I tweaked the spring some and adjusted the governor world of difference thx everyone Share this post Link to post Share on other sites
