no start

1999 gmc suburban shut off no start next morning will crank then act's like it loads (cranks hard for a second then back to normal) has good spark has a fuel vapor out of exhaust but will not fire.
What I've checked
Spark on every plug. Good and new
When I pulled the plugs they were wet with gas
Distributer turns new cap & rotor
Checked time manually (TDC looked at distributer rotor Pointing cylinderat # 1 cylinder
Will check fuel pressure when I get home
Thanks for the help

1999 gmc suburban shut off no start next morning will crank then act's like it loads (cranks hard for a second then back to normal) has good spark has a fuel vapor out of exhaust but will not fire
Check for a plugged air filter if clean check fuel pressure.