I've got an 87 model 25HP Nissan that I'm trying to figure out why it runs rough at idle through 3/4 throttle. The motor runs great wide open, and does not miss a beat. Here is what i have done so far.
1. Cleaned Carb (three times), there is not a spot of anything in it.
2. Checked for air...
I am in the process of working on an old Jon boat I purchased that came with a non running Nissan 25 hp motor (NS25C2), I solved the non running problem (Head gasket), and awaiting lower unit gaskets but am also trying to shore up some items that were rigged out of parts not meant for this...
