2000 vw passat 1.8t wont start

Assuming it is getting fuel to the cylinder, and the ignition timing is correct.....

1. Check for spark. (could be a bad spark plug). I have seen plugs that will fire outside of the cylinder, but not when installed. check carefully.
2. If there is spark, get a compression tester. remove the spark plug, replace with the tester, crank the engine a few revolutions. record the reading.
3. Remove the tester and squirt some oil into the cylinder, replace tester and crank engine again - record the result.
4. If step one reads zero...you have a burned exhaust valve or a hole in the piston, unless it is a blown head gasket which usually means there is water in the oil or visa versa. Or...if the head gasket is blown between cylinders, (no oil in water or water in the oil), then you need to do step 1 on the cylinder next to the bad cylinder. It should have a low or zero reading also.
5.If step 1 is a low reading (not zero) and step 2 INCREASES the reading. This means the rings for that cylinder are worn out and the engine should be overhauled.
6. If step 2 does not increase the reading of step 1 and it remains low (not zero), this indicates a leaking or partially burned exhaust valve.

check that the cam shaft is turning ( broken timing belt/chain will not allow position sensors to give spark). Check that the immobiliser is operational. have the fault codes read

could be time for a tune up also check the spark plug holes for oil if the valve cover gasket are leaking into there can also have a bad coil if the check engine light is on have it scanned at a auto parts store (most do it for free)the code can lead you to the bad cylinder exp code p0301 is cylinder number one p0306 is cylinder number six and the same for p0302-p035

Take the distributor cap off, crank the engine, see if the rotor turns.
Put it back together.
Remove the center ignition wire from the distributor cap, put the end of the wire within a quarter inch from metal ground, crank the engine, look for a spark.
The engine needs compassion, fuel, and spark to run. Check one thing at a time

on top of engine, remove each 4 ign coil

You have low fuel pressure, check fuel filter and fuel pump.

Low pressure at the fuel pump.Check and change if nessery.

Gasket need replacing and New Spark Plugs (NGK Orginal). May need Coils! If any, replace all at once, My 2000 Passat Wagon runs Great, 1,8T Wagon!

i had this problem on my 2002 passat. it was the ignition coils. first set were replaced in 2002 as a vw recall. second set (at 122K miles) were relatively inexpensive to fix. just one failed but it made the engine run really rough - my mechanic was able to move it from one cylinder to the next to get the problem to repeat.

is the floor board on passenger side wet???If yes it's the heater core, which should be accessible by removing the glove box. Did u check the oil, to see if it 's milky??? some times on the vw of any kind, they spring a slow leak on the head gasket which could cause the abnormal starting in the morning. Which then, as the engine warms up causes the gasket to swell up and seal itself untill the engine cools completely off again. Eventually the gasket will completely fail and u'll have to bring it to a shop or get a repair manual to replace the head gasket.