If you bought a new pump it is possible that the pressure relief valve has a burr at the opening and the relief plunger is hung up on it causing the oil to be dumped back in the crank case. It is one of the most obvious oil pump failure symptoms.
Amazon Com Roadfar Engine Oil Pump Compatible For 1998 2011
Subaru oil pump failure. But what if that doesnt happen. Subaru oil leaks like all cars 25l models can also leak oil but subarus horizontal engine design makes it easier to spot the problem the moment it starts. Right before you start your engine for the first time one of the last things that you typically do is crank the engine over to build a little oil pressure. The pump maintains the oil pressure to a point as can impart proper lubrication for the functioning of the engine and other machinery without friction. 11 people reported this problem subaru outback vehicles with this problem. Subaru 200000 miles often like the insurance of replacing everything on the front of the engine when the belt is replaced oil water pumps idlers tensioners oil seals.
So as you operate the vehicle the temperature of the engine will rise beyond normal. The pickup tube has received a reputation for failing and preventing the oil pump from getting oil. Our technicians prefer to use thread locker when replacing the seal to prevent the bolts from becoming loose again. Many engine builders are quick to point to oil pump pickup tubes as being the main cause for bearing failures in subaru motors. As with head gaskets the engine should be inspected by a technician during each oil change for evidence of leaks. In the absence of that right pressure friction will be caused for sure and the most obvious result then is heat generation.
There is a very simple and inexpensive subaru engine part that often gets blamed for many engine failures. People who plan to drive their. Locally we have had several members hit with this my self included. The leak may develop from the oil pump seal. Most of the labor required to replace an oil pump has already been done when replacing the timing belt. On a subaru this normally means cranking the engine over for a couple seconds a few times until the oil pressure light turns off.
This has been a issue in the past couple of years on new subaru oil pumps.
Gallery of Subaru Oil Pump Failure
