Asked in Car Starting Problems
89 jeep Cherokee started before I changed head gasket and cleaned the gunk out of the engine new crankshaft sensor but now won't start?
It's real easy to put the sparkplug wires back on... wrong. Everybody who goes very far into an engine does it at least once.
Never assume anything, start over and verify everything you've done.
Check the compression, make sure the head is seated properly. Check the plug wires. Verify that everything else is connected.
Once you find what's wrong it will be an "ah-ha" moment. You'll know it when you see it.