Evening gang, Yep I know this is a JD Tractor site, but if Im gonna take my motorhome to the New York State JD Expo, my generators gotta work right which it aint now, especially when taking my first wife (she dont like me to call her that lol) my mother, and my daughter n her best friend. Its an Onan Emerald I 4.0 KW with a one barrell carb and coil n points ignition which Ive already been through and its fine. The problem is it wants to lope slightly (governor picks up n down over n over though not real bad or not too much RPM change) and not run a good steady RPM as all my other Onan's did. The carb has a bottom of bowl power adjustment and a needle at top I consider an idle air bleed adjustment. The problem seems that if you open (richen) the power needle to where it runs the best and lopes n hunts the least, although it NEVER black smokes idle or under load, it just smells like shes too rich and never absolutely stops slight loping/hunting completely. Then, if you shut her off and restart her immediately, she black smokes baddddd dd n coughs n spits till she clears out all the raw excess fuel. If she sets a while before re start, shes fine and dont flood out. It has a vacuum choke pull off and an automatic choke and they BOTH work fine and the choke is total open after she warms up and durign re starts so thats not the cause of excess fuel. Air filter and passages are new n clean. I had another Onan which I removed the carb and it had some junk in the bowl near the seat n needle valve and I fixed it, but this is a different prob in that she wont hold a good steady RPM and Im confident its a carb and not any ignition problem. The governor spring and linkage appear fine and are clean and free moving. I guess I will remove n clean the carb n check the float level n needle n seat etc etc (It has an electric fuel pump, no gas EVER out or over the bowl nor any gas leaks) but was wonderign if any you guys had any experience with those Onan carbs or other experience when one acted that way. If after I clean the carb and check the seat n needle and float she still does it, Im gonna be upset n angry lol John T Nordhoff in Indiana
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