Timing marks for Audi TT 1.8 t (2000):
The simplest way to properly slave the crankshaft to the cam, is by using the above marks. Remembering that the firing order is 1, 3, 4, 2. EXERCISE EXTREME CAUTION the 1.8 turbo is an interference motors, whereas if the belt breaks, or the crankshaft is rotated out of sync, it not only can, but will damage a piston. Your safest bet (with crankshaft disconnected) is to pull all 4 plugs out. Rotate the crankshaft until all cylinders are at half bore (half way up their stroke. With all safely out of the way (which if your are looking at the marks on the lower crank pulley, is 90 degrees back the counterclock wise direction, or 9 o'clock), now rotate your camshaft pulley with a large socket wrench or breaker bar in the clockwise direction until you see the following:
as the mark on the timing(cam) pulley comes up to almost 12 o'clock(there is a mark on the valve cover indicating cam's tdc mark). You will know the number one piston is about to fire, because the piston before it will show the following camshaft behavior. The number 2 set of valves(2nd cylinder) are across from each other. the intake valves(w three cam lobes) are in front, and the two exhaust valves in rear. You will know the #1 p iston is coming up to fire because the #2 cylinder will be leaving a downward stroke with both intake and exhaust sets(lobes) closed. the 2 cylinder will open its exhaust valve set(2 lobes move looking downward their pointed "pusher's" will strike the lifters they sit on and forced downward pressure on the valve stems causing them to open.
When you see this, 1's pointers will point upwards or "off contact" with their lifters and the pointer on the cam will be rotating clockwise towards its mark on the valve cover (you will have to take the cover on and off to watch the cam and see the timing mark on the calve cover)with the cam pointer exactly on its mark on the valve cover indicating #1 piston is at tdc, rotate the camshaft back clock wise 90 degrees from the 9 oc'clock position, to point at its mark which is for all intensive purposes 12 'clock. Their is likely valve damage, however if there was a belt seperation. Don't forget to remove the tensioner/damper and depress the tensioning spring and secure it with a small finish nail before hand to facillitate sliding the belt on. Enjoy
SOURCE: snapped timing belt on 1.8t
just fixed my Audi TT ... timing belt snapped so the head had to come off to replace valves. used dial guage on top of piston !
if head is on then there is a plug you can remove that allows you to see top dead center..
SOURCE: 2000 Audi TT exclamation mark
The light you are referring to is your ESP light. You should have a button above the radio that reads "ESP" Electronic Stability Program is what it stands for.. its your traction control. It is somehow directly tied into the MAF and if the MAF goes it turns off.
ESP, electronic stability control, keeps the car going where
you steer it. You might have a dirty ABS wheel sensor.
Not always will the MAF trigger a CEL. But it can and will turn on the ESP light if its not functioning or plugged in. MAF can range from $80-$120 and Is easy to replace yourself. It is right next to the airbox.
The 2000 Audi TT 1.8 liters engine rear chain & tensioner set up:
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