Special Tools
EN 21867-850 Oil Pressure Gage Adapter
| • | With the vehicle on a level surface, allow adequate drain down time of 2-3 minutes and measure for a low oil level. |
| | Add the recommended grade engine oil and fill the crankcase until the oil level measures full on the oil level
indicator. |
| • | Run the engine, and verify low, or no oil pressure on the vehicle gage or light. |
| | Listen for a noisy valve train or a knocking noise. |
| • | Inspect for the following: |
| - | Oil diluted by moisture or unburned fuel mixtures |
| - | Improper oil viscosity for the expected temperature |
| - | Incorrect or malfunctioning oil pressure sender |
| - | Incorrect or malfunctioning oil pressure gage |
| - | Malfunctioning oil bypass valve |
| • | Remove the oil pressure sender or another engine block oil gallery plug. |
| • | Install
EN 21867-850 adapter
and an oil pressure gage and measure the engine oil pressure. |
| • | If the engine oil pressure is below specifications, inspect the engine for one or more of the following: |
| - | Oil pump screen loose, plugged, or damaged |
| - | Oil pump screen O-ring seal missing or damaged |
| - | Oil pump to oil pump pipe and screen assembly gasket missing or damaged |
| - | Oil pump pipe and screen assembly restrictions or damaged |
| - | Oil pump driven gear damaged or loose |
| - | Oil pump drive gear damaged |
| - | Malfunctioning oil pump pressure regulator valve |
| - | Cracked, porous or restricted oil galleries |
| - | Oil cooler restrictions |
| - | Oil cooler O-rings damaged or missing |
| - | Cracked, porous or restricted oil galleries |
| - | Damaged or missing oil spray cooling nozzles |
