I changed a timing belt on my 2006 hyundai tuscon and now the vehicle won't start

Here are two Youtube video's of the job of replacing the timing belt which shows the marks

Hyundai Tuscon Timing Belt YouTube Timing belt replacement


Hyundai Sonata 2 7L V6 2005 water pump Install...

See attached image for location of timing marks. When installing timing belt, first locate around crankshaft pulley, then idler pulley, left side cam sprocket, water pump pulley, right side cam sprocket, then the tensioner pulley.
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we need more info on this vehicle yr make model engine 2wheel 4 wheel auto manual

There may be a diagram under the bonnet, if not do a google search & you will find a diagram

Did you make sure you set cam & crank timing ? If the belt is off one tooth it will cause this. Recheck belt timing first.

If it has a timing belt they last on average about 80-90,000km's. So will need to be replaced most likely at your 90km service unless it has already passed that it may have been changed already. Take it to your mechanic and ask them to check it, not replace just check. They can tell usually by looking at it how long it has left.
It is possible it has a timing chain, if that is the case it won't need changing unless you are very reckless with your vehicle.

This particular vehicle is one of Hyundai's Top Sellers. I'm a Service Technician and can tell you I haven't seen any 'MAJOR' problems with the Tuscon -- just minor stuff.

Constant clicking of the compressor is an indication the system is low on refrigerant. Most vehicles require a minimum of 2lbs of refrigerant to power the compressor. The constant shutting off is a safety measure to protect the compressor from burning out. Most service stations do AC service now. They will typically run a leak detection test to find where the refrigerant is escaping. They won't usually "top off" refrigerant due to legal restrictions. If you're somewhat handy, most auto parts stores will sell you a refill kit that includes refrigerant, oil, and a hose.

Scheduled Maintenance Services, for most Cars, has to be done at 30K, 60K, and 90K. Hyundai dealer recommend to replace the timing belt at 60K Service.
If you wait, one of two things could happen: Nothing, or the belt could break and you would be out thousands to repair the engine instead of a $400 hundred to replace just the belt. If it breaks, there will be damage done to the valves and various other internal components, which will not covered under warranty. The problem is that the Dealer would charge you between $700-$800 because they would also replace the water pump at the same time. Or you can buy the timing belt and change it by your self. To do so, you nee the Haynes Repair Manual specific for your car another equivalent.
2006 HYUNDAI TUCSON GLS 2.7L 2656cc V6 FI (D) DOHC : Engine : Timing Belt

every 60,000 miles.