hi guys i hope someone can help me. i had to change the camshaft chain tensioner on my 2005 ford fiesta TDCI (mk6). After fitting the new camshaft chain tensioner I timed the engine correctly using the correct timing pins.(i also rotated the engine by hand clockwise through 12 cycles with no issues, everything was sound) Unfortunately after piecing everything back together i realised that i had forgot to put the cam shaft oil seal on!!!! so i began taking everything off again. fitted the new oil seal and again put everything back together. this time however i could only get about half a turn from the crankshaft i took the belt off and the crankshaft with nothing attached to it and it still wouldn't rotate. I don't know if the valves are hitting or getting jammed on something I've read up online that the fuel pump sprocket needs to be taken out then the engine should be timed and then put back in (apparently the fuel pump runs on a chain which is connected to the camshaft.)
Any help on this would be greatly appreciated.
Thanks in advance guys!