Engine Setup And Testing - GMC T Series 1994 Repair Manual

ENGINE SETUP AND TESTING

After overhaul, the engine should be tested before
installing it in the vehicle. If a suitable test stand is not
available, the following procedure can be used after the
engine has been installed.
1. Install the filter.
2. Fill the crankcase with the proper quantity and
grade of engine oil.
Important
• If a new camshaft or hydraulic lifters were
installed, add Engine Oil Supplement (GM P/N
1052367) or equivalent to the engine oil.
3. Fill the cooling system with the proper coolant.
4. Crank the engine several times. Listen for any
unusual noises or evidence that any parts are bind­
ing.
5. Using the appropriate truck service manual or
Emission Control Label for specifications, adjust
the base ignition timing.
6
. Start the engine and listen for unusual noises.
7. Run the engine speed at about 1000 until the
engine is at operating temperature.
8
. Listen for sticking lifters and other unusual noises.
9. Check for oil and coolant leaks while the engine is
running.