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GT-CCV15  —  New Crank Case Breather and Evap Manometer
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GT-CCV15 — New Crank Case Breather and Evap Manometer

The GT-CCV15 is very Easy to use and accurate and will make selling oil seperators / breathers so much easier.

Diagnose the status of the crank case breather / oil seperator with this tool in less than 1 minute.

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Turn the tool on and attach the oil cap to the valve cover or through the dipstick tube and start up the car. Wait for the high idle to drop and take your reading. If it is reading high the tool has diagnosed an internal leak which is intake vacuum in the crank case which is a faulty diaphram / spring in the breather caused by too much cooked oil making the breather stick open: replace the oil seperator. If the reading is low the tool has diagnosed an external leak. If that is the case now you can attach your smoke machine right to the oil cap hose, block off the throttle body, and smoke the engine for gross leaks: replace the cracked hose.


Speaking candidly to the professional:

When dealing with a lean misfire, a common way to diagnose defective crank case breathers is to see how hard the oil cap sticks to the valve cover when you try and remove it with the engine running. This style of test worked good to diagnose pre-2006 cars but most german 2006+newer cars have 3x-4x the vacuum than the older cars had, making that test arbitrary on newer cars. It would be unprofessional to diagnose a gross evap leak by pushing down on the gas cap while the evap pump is on to see if the evap pump is building pressure, so why would you pull on an oil cap when the acceptable margin of error is the same. This tool will eliminate the technicians bias and give your shop the information you need to replace defective breathers when they are in the early and late stages of failure.


Take VW / Audi as an example:

If your customer likes their car and wants to maintain their engine then proactively selling oil separators when justified will do just that. As you know VW tells their customers that the engines will burn a quart every 1k. A delay in the oil service is bad enough but if you add into the mix an oil separator that is no good then this will only accelerate oil consumption. On a 5k oil service a 2.0T is FULL at 5 quarts. That means that VW expect you to burn through all that oil by the next oil change interval.


EVAP Testing:

Have you ever questioned the readout of the sensor in the tank and wanted a way to verify the sensor was any good.  This tool once adapted to your gas tank will give you a digital readout of your evap pressure.


Differentail Pressure too:

This tool is also capable of differential pressure sensing as well.  As an example if you have two carburetors and you have to synchronize them this tool will allow you to compare two vacuum or pressure sources simultaneously.


What the GT-CCV15 comes with:

1) Ultra Precision Electronic Manometer.

1) Spec Sheet for both BMW and MINI COOPER engines.

1) Oil Cap & hose that fits BMW, MINI COOPER, VW/AUDI, and MERCEDES BENZ.



  • One button auto-zero function
  • Auto power off function to conserve battery life
  • Rugged extruded aluminum housing
  • Instant selection of up to nine English/metric units
  • ±1.5% FS accuracy


Range of Tool:

W.C. -60 to +60
bar 0.1495
psi 2.168
in Hg 4.41
kPa 14.95
in w.c. 60
mm Hg 112.1
mbar 149.5
mm w.c. 1524
Pa 996
Resolution in w.c. 0.1
Max Pressure 5 psig



Service: Air and compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±1.5% Full Scale @ 72°F (22.2°C). Includes linearity and repeatability.
Pressure Hysteresis: ±0.1% of Full Scale.
Pressure Limits: 5 psig (.34 bar).
Temperature Limits: 0 to 140°F (-17.8 to 60°C).
Compensated Temperature Limits: 32 to 104°F (0 to 40°C).
Thermal Effect: 0.05% F.S./°F.
Display: 4 digit LCD (.425″H x .234″W digits).
Power Requirements: 9 V alkaline battery, installed non-functional, user replaceable.
Process Connections: Barbed connection for use with 3/16″ or 1/4″ I.D. tubing.
Weight: 10.8 oz (306 g).
Agency Approvals: CE.


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