Anyone here ever see an oil pump in a remanufactured shortblock fail before its first oil change? The thing had less then 2k miles on it and it gave out. No oil pressure light on the dash, just some noises an engine should never make and a complete lack of power. It starved both heads for oil and developed a pleasant sounding knock...

 

Engine was a DOHC 2.5, replaced by a dealership with all subaru parts. Its now getting another reman block and heads under warrenty.

Wow thats wierd. Usually when something like that fails its because an oil journal was blocked off by sealant. Usually the oil pumps are speced out before the engine is reassemebled. There isnt a lot to an oil pump, a couple of gear, a spring, a check ball, and a housing.

 

If its a factory short block, its built by (forget who it is down south that makes diesels). I have been very happy with my short block.

 

Also you have these rascally carbon units assemblying them, and they have been known to err.

 

 

nipper

I wouldn't be suprised if this was mechanic error, this particular dealership has had less then steller results with this car. I havent gotten to take a look at the oil pump yet, this is just what they've told me so far. What I find odd about it is, shoulden't the oil pressure light have come on if the pump did fail? I know the bulb is good because it illuminates on startup.

I wouldn't be suprised if this was mechanic error, this particular dealership has had less then steller results with this car. I havent gotten to take a look at the oil pump yet, this is just what they've told me so far. What I find odd about it is, shoulden't the oil pressure light have come on if the pump did fail? I know the bulb is good because it illuminates on startup.

 

the oil pressure switch is set at a very low threshold. If for some reason you were getting 5 psi at 3000 rpm, that is not enough lubricant. The light would never come on.

 

nipper

could be a big pile of loose junk or excess sealant debris blocking the suction. Is there a pickup tube that can come dislodged on this engine?