G’Day experts.
I have a tricky one. Completed a top end rebuild on my 450, piston and valves, setup valves to spec all bolts torqued to spec ect ect.
Now, starts, runs sweet for about 10 sec then starts knocking/rattling like a valve is hitting piston then engine dies!
Rechecked cam timing and tensioner-all g. Pulled head and checked for any valve piston contact-nill. Rechecked valve clearances-spec. Vac tested valves-good
I’ve rebuilt a few of these engines before and never had this problem. Could it be timing slipping causing ping then stall?? Flywheel nut still tight and woodruff key in place. Anyone have any ideas? TIA
Jay
I have a tricky one. Completed a top end rebuild on my 450, piston and valves, setup valves to spec all bolts torqued to spec ect ect.
Now, starts, runs sweet for about 10 sec then starts knocking/rattling like a valve is hitting piston then engine dies!
Rechecked cam timing and tensioner-all g. Pulled head and checked for any valve piston contact-nill. Rechecked valve clearances-spec. Vac tested valves-good
I’ve rebuilt a few of these engines before and never had this problem. Could it be timing slipping causing ping then stall?? Flywheel nut still tight and woodruff key in place. Anyone have any ideas? TIA
Jay