I don't have a dealer anywhere near me and need a little help. In neutral my 05 Johnson DF140 4 stroke idles fine at low speed, but when I lift the warm up lever it begins to surge badly at about 3000 RPM? It does seem to run fine in gear all the way up to WOT? Any advice would be helpful. I have recently replaced plugs, low pressure filter, and water seperator.
Thanks Jody
Thanks Jody