Discussion Starter · #1 ·
I have a 2004 6420 with 4000hrs. on it. i just serviced the tractor changing out all filters and oil. i was using it to bushhog and after apprx. 3 hrs. it started to sound like it was missing. it runs fine until you run the rpms up to apprx 1800 rpms and above the it sounds like it is missing. it loses power. it doesnt die but smokes a little. i have 2 fuel filters. i just changed the fuel filters, no hoses are leaking. what could be my problem?