This is a troublesome engine that does not have any markings for references according to our database. Special tools are required to hold the camshafts in position while installing the timing belts and it is an interference engine so hope you have not forced the crankshaft too much to cause damage to the valves.
I also found this guide to help you with the timing marks
You would need to remove the valve cover for the job.
1. Turn engine at crankshaft central bolt. Turn engine until the cams (arrows) at intake and exhaust camshaft of cylinder 3 (right cylinder bank) point upward uniformly. See Fig. 21. Insert Camshaft Adjuster Gauge (T40030) at camshafts of right cylinder head. See
2. Slightly turn crankshaft back and forth so that the claw of camshaft adjuster gauge can properly grab the camshafts. Spread and tighten camshaft adjuster gauge with threaded shaft to 7 ft. lbs. (10 N.m) until seated without axial play. Repeat procedure for left cylinder head.
3. If installed, disconnect after-run coolant pump harness onnector. Remove sealing plug of TDC mark at cylinder block. Install Locking Pin (T40026) into the hole of the removed sealing plug and tighten. See Fig. 23. Slightly turn crankshaft back and forth to allow locking pin to bottom in crankshaft properly.
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Monday, January 2nd, 2012 AT 8:00 PM