jdog_kustoms 82 #1 Posted March 24, 2012 i havent ran my 1987 416-8 for a while i got it out today to get it ready to take the chipper off and put my deck on and it wont run right i cleaned the carb nothing changed i replaced the coil nothing changed also has new oil and plug and new gas my issues is it will not idle it runs ok but misses at wide open throttle and when ever you make a suden jerk on the tractor either like take off or =hit the brakes hard it shuts off and is a pain to get restarted but will eventually when it sits for a little while this thing has me totally lost i even took my carb off a k series 16 hp with the kohler carb vs. the walbro it has on it and it would just search with the govener and spoit and sputer when ever you tried to drive it at all Share this post Link to post Share on other sites
gwgdog66 23 #2 Posted March 24, 2012 Does pulling the choke out change anything? I haven't had much experience with magnum's. The surging and sputtering sounds like water in the gas. It might have still been in the fuel filter, and when you drained the old gas and put good gas in, it could have pushed it into the carb (s) Share this post Link to post Share on other sites
can whlvr 991 #3 Posted March 25, 2012 sounds like the carb needs cleaned,i had a 14hp and a 12hp magnum both do this,took them apart and cleaned,no luck,took them to my freind who has an altrasonic cleaner,6 hours in the cleaner and both tractors run like new Share this post Link to post Share on other sites
Docwheelhorse 2,561 #4 Posted March 25, 2012 I would bet that seeing as the engine ran almost the same with two different carbs that the fuel in the tank is junk..... Drain it and run some fresh stuff. Also--I have noticed that the rubber tip needles in the carbs has been screwing up all the time with this new "wonderful" gas.... This gas plain sucks and I have had water issues and sour gas issues and everything in between. The alcohol is killing us... Tony Share this post Link to post Share on other sites
