Valve Train Analysis - Engine Off, Camshaft Lobe Lift - OHC Engines
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
Check the lift of each camshaft lobe in consecutive order and make a note of the readings.
- Remove the valve covers.
- Remove the spark plugs.
- Install the special tool so the rounded tip of indicator is on top of the camshaft lobe and on the same plane as the valve tappet.
- Rotate the crankshaft using a breaker bar and socket attached to the crankshaft pulley retainer bolt. Rotate the crankshaft until the base circle of the camshaft lobe is reached.
- Zero the dial indicator. Continue to rotate the crankshaft until the high-lift point of the camshaft lobe is in the fully-raised position (highest indicator reading).
- To check the accuracy of the original indicator reading, continue to rotate crankshaft until the base circle is reached. The indicator reading should be zero. If zero reading is not obtained, repeat Steps 1 through 6.
- Install the spark plugs.
- Install the valve covers.