Lexus LS400 Vent Oil Separator Replacement at your home or office.

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Vent Oil Separator Replacement Service

How much does a Vent Oil Separator Replacement cost?

On average, the cost for a Lexus LS400 Vent Oil Separator Replacement is $462 with $253 for parts and $209 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1990 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$759.38Shop/Dealer Price$924.48 - $1333.16
2000 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$880.55 - $1289.28
1991 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$880.55 - $1289.27
1994 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$880.46 - $1289.12
1999 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$880.61 - $1289.38
1997 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$880.55 - $1289.27
1996 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$726.38Shop/Dealer Price$891.02 - $1299.36
1998 Lexus LS400V8-4.0LService typeVent Oil Separator ReplacementEstimate$726.38Shop/Dealer Price$892.46 - $1301.87
Show example Lexus LS400 Vent Oil Separator Replacement prices

What is the Vent Oil Seperator all about?

An internal combustion engine runs on a series of controlled explosions. During this process, gases are created. While most of those gases will eventually make their way from the combustion chamber through the exhaust manifold and out the muffler, some pass the pistons into the crankcase. The latter is called “blow-by”, and it can be very damaging to an engine. It creates additional pressure within the crankcase that damages seals and gaskets. To combat this deleterious effect, a ventilation system is used.

These systems require several different components in order to operate, including the positive crankcase ventilation (PCV) valve and the vent oil separator hose. The vent oil separator hose is responsible for capturing and collecting oil droplets that invariably accompany those spent gases and ensuring they are not released into the combustion chamber. The gases are then re-burned for emissions control. If your vent oil separator is plugged, excess pressure can build up inside the crankcase and blow out a seal, causing an oil leak. Excess oil in the vent oil separator can also enter the combustion chamber, causing a misfire and rough run with blue, oily exhaust.

Keep in mind:

  • The vent oil separator hose is susceptible to clogging, particularly during cold weather.
  • The vent oil separator hose is part of the crankcase ventilation system. If you’re experiencing related problems, have the entire system diagnosed.

How it's done:

  • The faulty vent oil separator is located and identified
  • The intake is removed and the vent oil separator is removed
  • The new vent oil separator is installed and the intake is installed
  • The engine is started and idled, then the new vent oil separator is checked for leaks
  • The vehicle is road tested and checked for proper operation

Our recommendation:

The vent oil separator doesn’t have a set maintenance schedule. If you are having symptoms related to the vent oil separator, have one of our expert mechanics diagnose the crankcase ventilation system on your vehicle and repair it as necessary.

What common symptoms indicate you may need to replace the Vent Oil Seperator?

  • Oil is present in the PCV valve
  • Blue smoke from the exhaust
  • Engine runs rough with a check engine light on

How important is this service?

The crankcase ventilation system is a vital part of your emissions control system and can adversely affect engine operation if it is not maintained properly.

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Meet some of our expert Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating

(148)

Rating Summary
139
7
1
0
1
139
7
1
0
1

Kris

12 years of experience
40 reviews
Kris
12 years of experience
Lexus LS400 V8-4.0L - Hydraulic Brake Booster - Atlanta, Georgia
Kriss was very knowledgeable and was able to ask all of my questions pertaining to my vehicle

Cesar

9 years of experience
292 reviews
Cesar
9 years of experience
Lexus LS400 V8-4.0L - Brake Rotor/Disc Replacement (Front, Rear) - Edmonds, Washington
Knowledgable, hard working, fast. Pointing out "dry rot" on my tires, very alarming as they could fail when driving.

TJ

26 years of experience
362 reviews
TJ
26 years of experience
Lexus LS400 V8-4.0L - AC is not working - Sarasota, Florida
Had a complex problem with AC. Was very knowledgeable. Got real close to figuring it out but needed to do some more research. Will come back again. It is some kind of short or ground in a wiring harness that is extremely difficult to find. AC is no fixed yet but I know it will be on his next visit. Would have spent thousands at a dealer I am sure.

Jeff

33 years of experience
441 reviews
Jeff
33 years of experience
Lexus LS400 V8-4.0L - timing inspection - Sacramento, California
Great mechanic

Excellent Rating

(148)

Rating Summary
139
7
1
0
1
139
7
1
0
1
Number of Lexus LS400 services completed
1628+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform

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