Isuzu Truck Cylinder Head

I Had Change The Piston Ring

So Where Would L Be Wrong With My Timing. Is It On The Camp Shaft Or Timing Gears

4.3ltr Diseal Engine

How Do L Know That The Timing Is 100% Right

Here Are The Pistons Like Piston 3

L Have Sent A Pic Of The Campshaft With The Mark, Its A 4fh1 Engine Type

L Think The Timing On The Campshaft Is Wrong. The Gear Attached To Campshaft Gear Has A Mark Painted In White. So When L Set The Timing It...

The Type Of Engine That L Have Is A 4fh1 On Isuzu Elf 250. Is My Problem On The Campshaft Timing?

So How Do L Fix Timing On The Campshaft Gear. On Camp Shaft Gear There Is A Mark Painted In White. So The White Mark Faces East Or West

My Problem Is That The Pistons Are Hittin Exhaust Valves. Does This Mean My Timing Is Wrong. There Is A Gear Attached To Campshaft, On That...