Anyone who has done the basic research about the Mercedes diesel injection pump knows that they are very sturdy and durable parts that are made to last. The main reason for their durability is due to their location, which is inside the engine itself making it hard to access and replace or repair.
Just because the injection pump is durable doesn’t mean it won’t encounter a few problems here and there. In fact, since the fuel pump is exposed to fuel on a daily basis, it will eventually experience some wear and tear with time. Here are some common problems with the injection pump and the reason for these issues:
1 – Sputtering Engine
Engines that start to sputter or make weird noises when accelerating may have some injection pump issues that can be due to a clogged spray tip. The clogging can be caused by dirty fuel that may contain residue that can build up in the fuel system. The lack of cleanliness from the fuel used will result in a lot of fuel injection problems if the issue isn’t addressed right away.
2 – Worn Out Bearings
The culprit for premature wearing out of the bearing is driving on low or empty fuel. When the engine is running on fumes alone, there is not enough lubrication for the bearings to function properly since it only uses air in the engine. The friction will speed up the wearing and tearing process and prevent the injection pump from delivering fuel at the appropriate pressure levels.
3 – Timing Issues
A defective or old set of o-rings results in the interruption in the fuel transfer process. Since there is a disruption in transferring fuel, timing issues will start to occur more frequently. If the o-rings aren’t replaced with new ones, there is a good chance that the Mercedes diesel injection pump will need replacing or a total rebuilding at the very least.
4 – Smoking Exhaust
The smoke that is expelled from the exhaust pipe of the car are the remains left behind by the combustion process. This needs to be drawn out from the engine as accumulation inside will give rise to more problems. The most probable cause of a smoking exhaust is a dirty or malfunctioning pump that may need cleaning or replacing.
5 – Engine Misfires
Several engine misfires are a sign of big trouble. There are many reasons why misfires occur, but if the issue is traced back to the injection pump, it is more likely that the pumps are no longer capable of supplying the engine with enough fuel to start.
Cranking the engine several times may result in the vehicle starting up, but misfires should never be ignored, especially if it becomes a regular occurrence.
Monitor Vehicle For Signs Of Injection Pump Issues
Injection pump troubles are far down the list when a vehicle starts to malfunction, but it could cause a lot of car trouble. If there is no other possible reason for car trouble, check the pump for signs of damage, clogging, or simple wear and tear.
At Adsit, we have a good inventory of Mercedes diesel injection pump that matches that part you need for your car. Check out our online catalog or contact us for any inquiries.