Honda pcx crankshaft locks under throttle?
My friends pcx blew and the crankshaft seized we un seized it with a breaker bar to find out it spins smoothly but when you open the throttle it cuts out and the crankshaft locks up straight away? Is there a throttle activated oil pump in these or what could it be. I'm used to working on 2t bikes done plenty of rebuilds & as far as 4t bikes I've only done dirt bike engines which aren't fuel injected… Does anyone know?