Weekend Freedom Machines banner

'86 420 20hp Onan puffing black smoke...surging

1K views 5 replies 5 participants last post by  Gansettx 
#1 ·
So...Tractor was given to me by family...massive amount of service records, serviced every fall just before storage. the hour meter reads just under 400hrs and recently when starting it seems to be loading up, black smoke almost as if its getting too much fuel...it also has surging at anything less than 3/4 to full throttle. At what RPM should the engine idle @ Any suggestions would be great. Oh yeah original engine...Thanks
 
Discussion starter · #6 ·
Thank You everyone for the info...going to get the seafoam and checkout the slow/idle jet...(nice one Glenn with that statement I'm guessing my problem isn't terminal) I'll update the outcome!
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top