A loose timing chain should be replaced.
Timing belt or chain may be bad.
Bad timing/valves/rockers/timing chain
Do you mean a bad timing chain ? The 2.3 liter four cylinder engine in a 2005 Ford Escape has a timing CHAIN instead of a timing belt
Incorrect Timing Can Cause Backfire.
You can tell a timing chain is bad when your engine makes a sharp washboard-like sound that increases in intensity when the engine's RPMs increase.
It uses a timing chain
It will F@#! your car up real bad.
if a timing chain is bad it can make clanking sounds and by that stage your in trouble but they can stretch and get lose and then it will start making sounds to warn you hope this helps
Timing Chain
timing chain timing chain
http://www.agthompsonfamily.com/vw/TimingChainNoise.wma