I followed your video step by step setting the timing chain with no marks for the 2002 2.0ltr ford focus it still wont start

Fig. Timing chain link and sprocket timing mark alignment-4.6L engine

Fig. Sealant application to the front cover mating surface-4.6L engine

Fig. Front cover bolt tightening sequence-4.6L engine

Fig. Front cover-to-oil pan bolt tightening sequence-4.6L engine

1. Step 1: 66 ft. lbs. (90 Nm).
2. Step 2: Loosen the bolt one full turn.
3. Step 3: 37 ft. lbs. (50 Nm).
4. Step 4: 90 degrees.

Install a retaining clip on the tensioner to hold plunger IN during installation.
marking timing chain

Position the crankshaft using the special tool. Then remove the tool.
Crankshaft special tool positioning

Install the crankshaft sprocket with flange facing forward.
Crankshaft sprocket timing mark

Position the left timing chain on the camshaft sprocket. The timing mark on the camshaft sprocket must be aligned between the 2 copper (or marked) chain links.
Left camshaft sprocket timing mark

Position lower end of right (outer) timing chain on the crankshaft sprocket. Align the copper (or marked) chain link with the timing mark on the outer flange of the crankshaft pulley.
Right camshaft sprocket timing mark

Align the chalk mark on the balance shaft with the camshaft timing mark.
Balance shaft bearing caps

• Step 1-30 ft-lbs (40 Nm)
• Step 2-tighten an additional 90 degrees