Navigator 4WD V8-5.4L SOHC VIN L (1998)
Compression Check: Testing and Inspection
Test Results
The indicated compression pressures are considered within specification if the lowest reading cylinder is within 75 percent of the highest reading. Use
the Compression Pressure Limit Chart.
If one or more cylinders reads low, squirt approximately one tablespoon of clean engine oil SAE 1OW-40XO-1OW40-QSP meeting Ford specification
WSS-M2C153-G on top of the pistons in the low-reading cylinders. Repeat the compression pressure check on these cylinders.
