| ign="center"> | | | | injection pump happens when the rotor seizes in the |
| If you own a diesel truck with a Dodge Cummins | | | | distributor section of the pump. The most common |
| engine, then you probably already know all about the | | | | cause for the seizure is a lack of lubrication. Since the |
| common issues that can occur. If not, then please read | | | | Bosch VP44 injection pumps are lubricated by the fuel, |
| on. The Bosch VP44 injection pump used in the Dodge | | | | weak lifts pumps can again be blamed for this failure. |
| Cummins engine from 1998 to the 2002 models has | | | | The seizure will then break the Drive Plate and the |
| been to known to have its share of issues. This article | | | | truck will stop running, never to start again, until the |
| will help to explain some of the common failures and | | | | Bosch VP44 injection pump is replaced. |
| advice on how to avoid costly repairs. | | | | 2) Check Engine Code 216 |
| Bosch VP44 injection pumps perform four basic | | | | This is the most common mechanical failure and |
| functions: | | | | occurs over a period of time when weak lift pumps, |
| 1) Producing the high fuel pressure required for injection | | | | with low fuel pressure, rupture the diaphragm in the |
| 2) Distributing the high-pressure, metered fuel to each | | | | front of the injection pump. The timing piston will then |
| cylinder at the precise time | | | | vibrate to a point where it wears the housing of the |
| 3) Metering the exact amount of fuel for each injection | | | | pump down until the fuel is able to bypass the piston. |
| cycle | | | | Dodge has recognized this problem for some time, and |
| 4) Varying the timing relative to engine speed. | | | | they no longer even sell the lift pump that goes on the |
| The Bosch VP44 is an electronic rotary distributor | | | | side of the block anymore, instead they replace it with |
| pump that can vary fuelling and injection timing, and | | | | a unit that is now mounted in the tank. |
| also contains fuelling, timing, and diagnostic data. | | | | Preventing Bosch VP44 injection pump Failure |
| The number one cause of Bosch VP44 injection pump | | | | The best way to avoid failures of the Bosch VP44 |
| failure is a drop in fuel line pressure which is usually due | | | | injection pump is to prevent them from happening. |
| to a malfunctioning lift pump. Normal fuel pressure is | | | | Purchasing a replacement lift pump, one that is of a |
| around 15psi and if the pressure drops below 5psi an | | | | better quality than what comes from the factory will |
| injection pump failure is probable. Remember bad lift | | | | help. If that option is too costly, you can also install a |
| pumps can run unnoticed until costly damage is done | | | | gauge to monitor your fuel pressure. With the gauge |
| to the Bosch VP44 injection pump. | | | | you will be able to know when your lift pump is going |
| The following are the top two most common | | | | out and can easily fix the problem before you lose the |
| mechanical failures: | | | | Bosch VP44 injection pump. |
| 1) Rotor Seizure | | | | Preventing problems before they occur is the best |
| Another mechanical failure with the Bosch VP44 | | | | way to take care of your truck. |