97 2.2L timing confusion...help

Hi, I've replaced timing sprockets,chain,and tensionner on my cavalier(2.2L) and after i was done, started the car, ran fine for about 15 minutes and then it quit on me while driving about 20mph. I took timing cover off again, everything seemed good, hole and mark on gears lined up like suppose to.(took valve pan off and all rockers are movin).so no broken cam right?

the only thing I have found wrong is: zero compression in number 4 cyl, I did not check the other ones.

That and big enough gap between a few rockers and push rods.

What is goin on??? could it be collapsed lifters? i had 5w20 in it?? im out of ideas for that:runaround:

Hi, I've replaced timing sprockets,chain,and tensionner on my cavalier(2.2L) and after i was done, started the car, ran fine for about 15 minutes and then it quit on me while driving about 20mph. I took timing cover off again, everything seemed good, hole and mark on gears lined up like suppose to.(took valve pan off and all rockers are movin).so no broken cam right?

the only thing I have found wrong is: zero compression in number 4 cyl, I did not check the other ones.

That and big enough gap between a few rockers and push rods.

What is goin on??? could it be collapsed lifters? i had 5w20 in it?? im out of ideas for that:runaround:

Found problem: Broken camshaft key, gear spun on cam and I lost timing...smells like I need another motor

Found problem: Broken camshaft key, gear spun on cam and I lost timing...smells like I need another motor:jerking:
If you do your own work I would suggest a rebuilt long block.

If you do your own work I would suggest a rebuilt long block.

Yeah, sounds good, but what am i looking at moneywise?