Vacuum Pump - Diesel Trouble Shooting
NOTE:
This is GENERAL
information. This article is not intended to be specific to any unique situation or individual vehicle configuration. The purpose of this Trouble Shooting information is to provide a list of common causes to problem symptoms. For model-specific Trouble Shooting, refer to SUBJECT, DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing.
NOTE:
Diesel engines mechanical diagnosis is the same as gasoline engines for items such as noisy valves, bearings, pistons, etc. The following trouble shooting covers only items pertaining to diesel engines.
VACUUM PUMP (DIESEL) TROUBLE SHOOTING CHART
| CONDITION & POSSIBLE CAUSE | CORRECTION | |
|---|---|---|
| Excessive Noise | ||
| Loose pump-to-drive assembly screws | Tighten screws | |
| Loose tube on pump assembly | Tighten tube | |
| Valves not functioning properly | Replace valves | |
| Oil Leakage | ||
| Loose end plug | Tighten end plug | |
| Bad seal crimp | Remove and re-crimp seal | |