Jumped time timing off.
You have to remove the intake manifold and be care full of the crank sensor
In the oil pan
On a 1989 Oldsmobile Calais, the heater hose connects to the heater core, which is located inside the vehicle's dashboard. The two hoses run from the engine's cooling system; one hose typically connects to the water pump or intake manifold, while the other connects to the thermostat housing or engine block. Ensure that the hoses are securely attached and free from leaks for proper heating system function.
It's lean.
may have plug wire crossed
1 5 3 6 2 4
If a 1989 Suburban hesitates when accelerating from 45 miles per hour, the carburetor might need cleaned. A clogging can cause surging and hesitation.
Its screwed into the upper intake manifold on a 1989 ( somewhere ! ) 5.0 L
adjust the timing or use better grade/octane of fuel or both
rear tire wall under car tw mills
The gasket is between the head and the intake.
on top of the intake