how are all the normal things fuel filter,plugs points etc coil,are you getting gas to the engine is it trying to start etc. do you have oil in the engine hows the gas is it known good gas are the line to the fuel system stopped up?is the timing chain ok and when was it last tuned up is the air cleaner good
I would first spray carb cleaner in the throttle body and try cranking, it you get nothing different, check for spark. If its the motor I'm thinkin of the distributor is behind the water pump and its a pain in the neck to replace.
But even still... if you spray in the throttle body, you'll be forcing fuel down the intake, and if you get a chuggle, you're just not getting enough fuel.
(If a car has a fuel pump issue we have one guy spray carb cleaner Gummout 2+2 in the throttle body while the other guy drives it in the shop)
Also I still hate dealing with those distributors behind the water pumps.