Could be one of two possible problems: 1) Points/timing not set right or 2)High speed needle on your carb needs to be opened up as it sounds like your engine is starving for fuel at higher speed. Other causes could be a blockage in your carb or the float level is set too low.
I'm not sure of the SAE weight rating of the CNH BP Grease but it is thicker than SAE 90 wt oil. It has the consistency of a pudding and looks like butterscotch! Good stuff though. If you take regular grease gun grease (IH 251H EP) and mix in about 10-20% SAE 90 and stir it until it has the consistency of pudding you are there. The grease should adhere to the gears and flow.
I also have been lurking for almost 10 years now. Thanks everybody.
Rob, if all else fails, check the point pushrod end that contacts the camshaft for straightness. Some of the point rods are aluminum where-as the end or this rod is no longer flat due to wear. The result is a forever changing point gap! Kinda goes without saying on how it will start and run!
This issue drove me nuts on a several K Kohlers, now I inspect the camshaft-end of the point rod whenever replacing points.
Thanks for all the advice. I removed the points and looked at the push rod in side ... looks a little bit worn, also will replace the condenser and points too, hopefully this will correct the 1650 and make it run like it should.
I'll let you know later tonight or in the morning if its better
Rob D. Did you by chance paint the engine after you rebuilt it? Most people do and paint can be a good insulator. You need a good ground engine to frame, and then your condenser gets its ground through the top bolt on the coil mount. The head of that bolt is backed in against the cylinder wall to get a good ground independent of the tin plates which might not make a good ground due to paint.
I would also probably check my valve adjustments again just to be sure they are correct.
Does anyone have a good way of removing the old number decals from the fiberglass dash panel sides like on a wide frame (1X8/9 or QL)? I don't want to use a wire brush for fear of damaging the fiberglass. Trying to get it and the Cubby ready for a repaint job and new decals in the spring.
Speaking of razor blades I was at a place that did re-striping on Motor homes and they had plastic razor blades that they used to remove the decals. I've looked for them but have never been able to find them for sale. Anyone seen them?