Not sure I'm explaining that right. but,.. I'll start with some history. I bought the 4x4 4010 mule with a bad motor. I built the engine. Bottom end up. Fresh bearings, Pistons, etc. Cranks up and runs with no issues. However,.. doesn't seem to run faster than 20 mph and pulses at top speed like something is up with the governor. It feels like its cutting back. Climbing and pulling it seems to be fine,. It pulls hard and doesn't cut up. But on the road flat out Cuts back/Chugs/pulses/Revs.
Not sure where to start. Kinda tired of thinking about it. Any Ideas?
Just a mention, I'm not trying to make it faster, just fixed. 25mph it good by me. Hell,... for my purposes I'm fine with 20 mph as long as its' running properly.