Document ID: 1135451
- J 21867 Pressure Gauge
- J-21867-6 Oil Pressure Adapter Fitting
Tools Required
- With the vehicle on a level surface, run the vehicle for a few minutes, allow adequate drain down time, 2–3 minutes, and measure for a low oil level.
- If required, add the recommended grade engine oil and fill the crankcase until the oil level measures full on the oil level indicator.
- Run the engine briefly, 10–15 seconds, and verify low or no oil pressure on the vehicle gauge or light.
- Listen for a noisy valve train or a knocking noise.
- Inspect for the following:
- Foamy oil
- Slow idle speed
- Plugged oil filter
- Oil diluted by the following:
- Water
- Engine coolant
- Unburned fuel mixtures
- Malfunctioning oil filter bypass valve
- Incorrect or faulty oil pressure gauge
- Incorrect or faulty oil pressure gauge sensor
- Improper engine oil viscosity for the expected temperature
- Disconnect the oil pressure sensor wiring harness.
Click for full-size image
- Remove the oil pressure sensor.
Click for full-size image
- Install the J 21867 - Pressure Gauge with the J-21867-6 - Oil Pressure Adapter Fitting .
- Measure the engine oil pressure.
- Compare the readings to the Engine Mechanical Specifications.
- If the engine oil pressure is below specifications, inspect the engine for one or more of the following:
- Loose oil filter adapter bolts
- Missing or damaged oil filter adapter O-ring seal or seals
- Worn or dirty oil pump
- Loose oil pump-to-engine block bolts
- Loose, plugged or damaged oil pump screen
- Missing or damaged oil pump screen O-ring seal
- Damage or leak in the oil pump screen suction tube
- Malfunctioning oil pump pressure regulator valve
- Missing or incorrectly installed oil gallery plugs
- Loose camshaft intermediate drive shaft bolts
- Excessive bearing clearance for the following:
- Connecting rod or rods
- Crankshaft
- Camshaft or camshafts
- Camshaft intermediate drive shaft sprocket
- Cracked, porous or restricted oil galleries
- Broken valve lifters
- Repair or replace components as necessary.