The timing chain links the crankshaft with the cam or cams so that the valves will open and close in the proper order and on time in the pistons travel. If it becomes stretched the engine may begin to lose performance and eventually will sputter and backfire. If the timing chain breaks in todays cars it can do incredible damage. The tolerances are so close and all of that mass is moving so fast inside your engine that a broken timing chain usually results in several broken or bent valves. That means major work to get the engine back on the road. In fact, it's probaby as cheap to just go to a salvage yard and get another engine. It is that bad.
it leaks oil
It will F@#! your car up real bad.
it's no more timing belts on Sienna's since 2008.It's timing chain
If you think it is going bad STOP DRIVING and get it changed immediately. If the timing belt/chain goes while you are motoring it will ruin the engine.
redo the timing or replace the whole kit - I might add that replacing the entire timing chain as a kit is what you would do when you find out that the timing chain is bad. The question was what happens when the timing chain is going out? 1. It may get or be harder to start the engine 2. The engine performance will be down 3. The ignition and cam timing will be unstable 4. The engine has a greater potential to "jump" timing or become mistimed. This could lead to bent valves and other problems which are more expensive to fix.
its very bad for your engine. Change your timing belt ASAP before your engine goes CABOOM
A loose timing chain should be replaced.
Timing belt or chain may be bad.
This does depend on the engine design itself. If it is known as an interferance engine, then it is possible that the pistons can hit the valves if the chain breaks in operation.
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.