Changed Spark Plugs and Now Car Won't Start

[CTScott]

Did you try putting the old plugs back in?

[VegeLasagna]

Originally Posted by CTScott

Did you try putting the old plugs back in?

Ya, we put the old plugs back in.

So, we got the car to start.

BUT... now the car shakes and during idle, the engine shakes. Check engine light came on too.

Tried to drive it, but once we put the car in Reverse, the car shook like crazy. Definitely not sure what the problem is.