2000 saturn ls 2.2 twincam

https://toyota-specs.com/cars/2000/solara2.2/torque-specs_engine.php

According to this article, the 2.2 engine has a timing chain.
To see if the chain is bad it is best to take off the timing cover in order to see it the timing marks are correctly lined up because the chain may not have broken, but have jumped several teeth on the sprocket.

What exactly do you need to know about replacing the timing chain? Also you should note that the L200 (4 cyl) has a timing chain. The L300 (V-6) has a timing belt.

Another thing to note is that both of these are interference engines. If your timing chain (or belt) has failed and the engine will not start, the valves are likely bent and you may have damaged the pistons as well.

Saturn never did a recall on them, but a little Googling will find you a wealth of knowledge about the problems that the 2.2L engines had with timing chains...more correctly, timing chain tensioners. It appears that the engine did/does not supply sufficient oil to the tensioner and approximately every 60-80K miles, it will fail and allow the timing chain to jump time. This can be catastrophic if it occurs at speed since the engine had aluminum heads and is an interference type engine. I recommend that if you have one that has failed, repair it and dump it, or just dump it. If you want to keep it, plan on servicing the timing chain every 50000 miles to avoid needing head replacement. My daughter had a 1999 Cavalier with the 2.2L engine. The first time the tensioner failed, it happened as she turned the car off and no head damage occurred. Replacement of the timing chain/gears/tensioner fixed it and then 60000 miles later, on the Interstate, it happened again. This time it took the head with it. Lesson learned.

there could be few reasons of cause spark failure.
1. timing belt broken 2. crank sensor failure 3. cam sensor failure 4. coil failure

ls or sl two different models. 3.0 v6 has a belt kind of tricky take it to a shop. the chain on the sl or ls 4cyl 2.2 or 2.4 is also kinda tricky. the motor will be junk if you mess the timing up so leave it to a pro. there are a lot of out of work saturn guys around this would be a good side job.

This vehicle has a timing chain. It is located behind sepentine/alternator belt. Behind there is the timing cover which needs to be removed to inspect timing chain. I would suspect a bad fuel pump or crank sensor or ignition control module. These compenents fail the most at my shop.

There was a factory recall of the timing chain on the 2.2 Ecotec. This was done for me on my LW200, but then Saturn was still in business. Dealers are still around doing service though. Look over here for inside Saturn dope:
http://www.saturnfans.com/forums/showthread.php?p=1281727

Did you do a compression test on those two cylinders ? Check spark with spark tester ? of course the advance is going to jump around with a missing engine . Timing issue ,jumped time , engine mechnical problem . Testing an not guessing .

it has a belt. approx cost to replace belt, around $300

codes are for fuel system lean bank 1 and 2. low fuel pressure or innacurate mass air flow sensor could cause this. most common is mass air flow sensor.