Adjusting Ford Ranger V-6 Valves
V-6-171 Engine
When checking valve clearance, insert feeler gauge between valve tip and rocker arm at front or rear of valve tip and move gauge in a forward or rearward motion parallel to the crankshaft center line. If feeler gauge is inserted at outboard edge and moved perpendicular to crankshaft center line, a false indication will be given, resulting in tight valve clearance.
- Remove rocker arm cover.
- Rotate engine slightly until cylinder No. 5 intake valve just begins to open. This can be verified by placing a finger on intake valve rocker arm adjusting screw for cylinder No. 5 and feeling for movement while turning engine.
- Adjust intake and exhaust valves on No. 1 cylinder to .014 inch for intake valves and .016 inch for exhaust valves, by tightening or loosening adjusting screw as necessary.
- Adjust remaining valves in firing order by positioning cam according to chart.
To adjust both valves
for cylinder number:1 4 2 5 3 6 The intake valve must be
opening for cylinder number:5 3 6 1 4 2
Valve Arrangement Front to Rear V-6 171 Right Bank I E I E E I V-6 171 Left Bank I E E I E I V-6 177 Right Bank E I E I E I V-6 177 Left Bank I E I E I E
Additional Information provided courtesy of AllDATA
