Mazda Miata 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 Mazda Miata Vent Oil Separator Replacement is $462 with $253 for parts and $209 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1995 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$759.38Shop/Dealer Price$907.98 - $1304.28
2003 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$864.02 - $1260.35
2000 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$864.02 - $1260.35
1997 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$863.97 - $1260.26
1994 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$864.05 - $1260.41
2004 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$715.38Shop/Dealer Price$864.02 - $1260.35
2002 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$726.38Shop/Dealer Price$874.72 - $1270.82
2001 Mazda MiataL4-1.8LService typeVent Oil Separator ReplacementEstimate$726.38Shop/Dealer Price$875.54 - $1272.26
Show example Mazda Miata 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 Mazda mechanics

Real customer reviews from Mazda owners like you.

Excellent Rating

(263)

Rating Summary
246
7
5
1
4
246
7
5
1
4

Benji

22 years of experience
277 reviews
Benji
22 years of experience
Mazda Miata L4-1.8L - Brake Pads Replacement (Front, Rear) - Mesa, Arizona
For doing a job on Father’s Day he was precise and extremely friendly, highly recommend!!

Dominick

20 years of experience
7 reviews
Dominick
20 years of experience
Mazda Miata L4-1.6L - Car is not starting - Smithtown, New York
Hands down! The best mechanic I’ve ever met! Very honest and down to earth. He’ll let you know exactly what’s wrong with your car & how to fix it. You can’t go wrong with Dominick!

Victor

11 years of experience
211 reviews
Victor
11 years of experience
Mazda Miata L4-1.6L - Car is not starting - Virginia Beach, Virginia
VIctor did a great job. He diagnosed my cars issue promptly and provided a quote for a fix. He went above and beyond and took a quick look at another car of mine that was making some noise. I will definitely use again. Thanks.

H

26 years of experience
828 reviews
H
26 years of experience
Mazda Miata L4-1.8L - Car is stalling - Sunnyvale, California
Honoring came and diagnosed my car. He was very thorough and made Irvine past some false positive diagnostic tests until he was 100% sure he found the issue. I was very impressed that I didn't end up paying to fix non-issues or spend multiple repair cycles debugging.

Excellent Rating

(263)

Rating Summary
246
7
5
1
4
246
7
5
1
4
Number of Mazda Miata services completed
2893+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mazda MECHANICS
1100+
experts on our platform

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