How to adjust timing belt

Ignition timing is controlled by the engine management computer and is not adjustable. Valve timing is set at a fixed position when the timing belt is replaced and not adjustable.

Try a bit longer belt and adjust tension so it reaches pulley

The valves may be adjusted to the wrong tolerance ,
check valve lash.

You either have a defective drive belt or drive belt auto tensioner pulley or you have a defective AC compressor. In any event see the dealer to find out which is the problem or both.

These belt are a little difficult to do. They remain tight and you end up rolling the belt on to install. Once it is on and in place, then adjust a little tighter with the tensioner.

if the belt is still on the dot on the camshaft should line up onthe 12 oclock if you look close there is a mark behind it the crank mark is about 10 or 11 oclock you will see the marks make sure no1 is at top dead center if all this is good look to the left buy the camshaft and there is another pully on the left under the camshaft this is the adjust pully to take the slack out lossen it and push it till the slack come out ok and yes it is a interference motor hope this helps

You may have a broken timing belt.
When they break, they turn over but it sounds a little different, it has an uneven sound like it has a free spot making it speed up and down as it turns over,
Somtimes they bend valves when they break,and gets expensive to fix. but you may be lucky since you wernt driving down the road. the only way to knopw for sure is to replace the belt and start it up. it should run smooth without a miss

I found a few, most running over $100, this link has the equivalent tool costing much less. I 'll leave both links and you can choose. Best of luck on your repair.
http://www.denlorstools.com/home/dt1/page_13788_520/sealey_vs090_daewoo_water_pumptiming_belt_tool.html

http://www.etoolcart.com/browseproducts/Daewoo-Timing-Belt-Adajuster-J-42492-A.html

unfortunately you do have to tear it all down, but it's not as bad as it sounds. the 4cyl is easy to work on. you don't have to put it all back together to find out if timing is correct. if you have a good fully charged battery just run the engine with only the timing belt attached. (of course be absolutley sure to keep tools, engine pars, and hands clear!)

put on the parking break and the trans in neutral

tear down to the timing belt

adjust to tdc (there is a hash mark on the cam gear)

remove or losen the idler pully

allign the timing gear and crank gear. there are marks on these from the factory install.

tighten idler pulley

run engine. it should be fairly obvious if it's too advanced or lagged when you give it some gas.

You need a timing gun to set your timing belt wright..