Change of Fiat Palio 1.3 distribution strap 1.3

I changed the Fiat Palio 1.3 MPI EDX distribution strap, but I am with a vobration and a sound like a pounding, I do not know if I put on your time, can anyone collaborate to me?

If it sounds like you as you say, do not start it or you may ruin the engine (which will bend valves, as little) again disassembled strap and secure yourself from the draft points or marks are correct, that the tensioner is well placed and in its brand, always turn it by hand 6 laps even see that it remains in its marks again and the most imprient, that the engine is free. Have luck