Oil Pump
#1
Oil Pump
Took 03 G35 Sedan in today because the oil pressure light was coming on when warm/low idling. Shop said that I have about 5 PSI lost when idling. They said I need to replace the oil pump which will cost around $1500. Does this sound right? Does the price sound right? I could have my brother pull the engine and rebuild it for less. The mechanic told me that there is timing things that most mechanics would not be able to do if they replaced the oil pump.
Thanks for you help. This has be totally bummed out since it's my baby and only has 116k on it.
Thanks for you help. This has be totally bummed out since it's my baby and only has 116k on it.
#2
Banned
iTrader: (8)
We have yet to see a VQ oil pump fail, most likely you have excessive wear in the bearings causing low oil pressure. Your mechanic is right it is a very labor intensive job, the part is less than $200. Not all mechanics are competent enough to properly reinstall the timing parts. We have had cars come through our shop with 300k+ miles with original oil pump, your lack of oil pressure is a symptom of a real problem. And as far as installing new bearings, the labor is nearly the same as just changing the oil pump.
Let me know if I can help you with anything.
-Rob
Let me know if I can help you with anything.
-Rob
#3
#4
The following users liked this post:
Z1Motorsports (11-23-2011)
#7
I think Rob is right. The problem most likely has nothing to do with the pump. It's a terribly simple device.
You're brother might be a great mechanic, but it would be far easier just to find a junkyard motor and swap it in rather than rebuild. It's so rare that mechanics put these motors back together the right way unless they're specifically trained with the VQ. There's nothing special about these motors, but without the field service manual, you could miss some very crucial steps.
You need to take the car to a Nissan and get their opinion.
You're brother might be a great mechanic, but it would be far easier just to find a junkyard motor and swap it in rather than rebuild. It's so rare that mechanics put these motors back together the right way unless they're specifically trained with the VQ. There's nothing special about these motors, but without the field service manual, you could miss some very crucial steps.
You need to take the car to a Nissan and get their opinion.
The following users liked this post:
Z1Motorsports (11-23-2011)
Trending Topics
#10
Banned
iTrader: (8)
I won't go into great detail, but basically pressure is a function of flow/restriction. Bearing clearances make up the majority of the restriction (pressure) in the oiling system, cam, rods, and main bearings. As bearings wear clearances increase thus causing less restriction and loss of pressure. Oil pump performance typically doesn't significantly diminish over time, they usually just fail entirely, In almost all cases loss of pressure is caused by increased bearing clearances (worn bearings) or a oil leak on the pressure side of the system.
-Rob
-Rob
#12
Banned
iTrader: (8)
-Rob
#14
if you need a pump I got one for sale. asking 70 shipped for the pump. I also have a short block available....I also have my Long block available if you were interested.....Short block im asking 500.00 for it. Long block im asking 1000.00. If you want the complete block to swap straight out I am asking 1500.00. has 94k on the block but has some upgrades. Unorthodox Crank pulley, Deleted idler pulley, Polished Timing Cover, Pathfinder cooling mod with powdercoated gloss black coolant pipes with deleted coolant lines.
#15
your oil issue
hey do yourself a favor change your oil galley gaskets they are paper and cause pressure loss pumps rarely fail on these cars. the gaskets are located under your timing cover you will need to take the time cover and the upper oil pan off and thw you will see a almost y shaped channel its easy to do and you dont have to **** with your timing