I have a 2012 RZR XP 900 that I just did a fresh bottom end rebuild on. I put about 20miles on the machine and I noticed when I poke around with the throttle to get some good acceration some white smoke will blow out, if I’m at a constant RPM or speed there is no smoke. Seems like it won’t idol anymore with out me giving it has or it stalls. There is no power loss or anything other then the smoke when I give it some good throttle. I read that the smoke could be from the rings not in the correct position, valves guides or seals, restricted oil breaker hose or gasket.

I have a big ride planned in Logan, WV this Memorial Day weekend. I have extra rings, pistons, top end and head laying around also.

This does not effect performance yet, only smokes at various RPMS as in accerating sometimes or quick throttle at lower speeds. Engine will stall of I do not give it any throttle. Started around 20miles after rebuild. Oil is clean and topped off.

I’m curious if anyone has any ideas? I have all the extra parts needed I just don’t want to replace the head or gasket if it’s just the rings or jugs. Thanks!