Batista230

Hi
I have a 16 hp vanguard v twin Briggs and Stratton engine that powers a roots 33 blower and a Cat pump via a belt

When you turn the machine over by hand there seams to be a stiff point wear the engine sticks and is difficult to turn by hand past this point
It is hard starting the engine with the starter motor
At first I though the blower was sized and rusted inside so I removed the gear cog that drives the pump and blower and pump and blower turn just fine

But the engine when trying to turn by hand she sticks in certain places and is hard to move again by hand like it wear sized
I started the engine she started OK but bear in mind the engine is not pulling a load this time and should start easier with out the load
The engine sounded different but with out the load you should expect that rely
But she still Coffs and splutters like before

Anyone have an idea what it could be

Thanks
Batista230