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Exhaust Back Pressure Test and Check Manifold Vacuum
How To Test Exhaust Back Pressure
- Removed O2 sensor and screw gauge and adapter into sensor hole. Started truck.
- Accelerate the engine to 2500r/min, if gauge read less than13.8 Kpa pressure, showing no blockage.
- If greater than 13.8 Kpa, means have blockage.
How To Check Manifold Vacuum
Use this vacuum gauge measure the manifold vacuum pressure, helped you troubleshoot the system and find the failed component.
- Start the engine and warm up the engine temperature to between 75-85 degrees, turn off the engine.
- Connect vacuum gauge, Started let the engine run in idling conditions, and ensure the speed is around 850r/min.
- If guage read less than 53Kpa, indicates that the system has a leak.
Digital Display Gauge
- Vacuum gauge is digital display, digital dial will more direct and accurate show pressure than needle.
- The unit is Kpa and mbar, you can switch between two units.
- Rubber cover protect in sueface, this tool not come with battery.
Vacuum Gauge Tester Hose
The hose 48 inches, they can reach long space.
Different Brass Cone
Come with 7pc different brass cone, they can withstand high temperature, and 3 cone with seal ring, they can fit many car part and prevent leaks.
Plastic Cone and Adapters
Come with 2 different plastic cone and 2 different adapters, they can quick switch between different connectors
Jonathon K.
Reviewed in the United States on May 8, 2024
I used it for the first time and the gauge doesn't read properly it also doesn't read PSI. Don't waste your money.
frank costello
Reviewed in the United States on September 3, 2023
Great
Randy
Reviewed in the United States on April 6, 2023
Just what I needed.
Dylan Morse
Reviewed in the United States on July 1, 2022
All things considered, for $40 you get a nice variety of adapters and an accurate and very sensitive pressure gauge.Disregard the negative reviews...-No it doesn't come with instructions, but if you purchased this tool, I would hope that your half way mechanically inclined.-No, I probably wouldn't use the supplied vacuum hose to test the exhaust system, I would use something a bit stronger.
Anthony N.
Reviewed in the United States on May 9, 2022
first off there battery compartment is confusing with placement for two triple A batteries with no indication of what direction they go (+)(-) there is only one spring for the negative side of one battery i tried it multiple directions would not turn on so chalking it up to doesn't work
Customer
Reviewed in the United States on May 23, 2022
Clearly says in really small print bluetooth connection on the front panel but, according to the seller no bluetooth Why? These days one of the main advantages of a digital instrument is the ability to convert into several different measurements not a feature they included on this one. No manual is available. the case and adapters look ok but, I don't want to have to do conversions to make the measurements make sense to me.
Gabriel D.
Reviewed in the United States on May 14, 2022
The oxygen sensor adapter has rubber o-rings which melt. And I compared readings from this device with another known calibrated mechanics shop, it was not consistent or accurate. I would not recommend buying. The case it came with is nice, so it will look good sitting on my shelf as I never use it again.
Charles Cravens
Reviewed in the United States on March 13, 2022
Testing automotive service
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