Tag Archives: 6.7

How To Do a Boost Leak Test

Here I Teach How to Do a Boost Leak Test. This Is the Most Important Thing to Know How to Do If You Own a Turbo Car.

If Your Turbo Vehicle Has a Boost Leak It is Rob You of Your Horsepower, Fuel Economy, and Can Potentially Cause You to Blow Up Your Engine by Burning a Valve, Running too Rich and Washing the Cylinders, and Blowing Your Headgasket from Throwing off Your Tune.

Boost Leaks Will Cause a Rich Condition, The Car can Also Experience Stalling, Rough and High Idle, Loss of Power, Bad Fuel Mileage, and Loss of Turbo Spool up. This is the Single Most Important Thing that You can Learn About Turbochargers.

Here is an Easy to Read Itemized List of Symptoms of Boost Leaks:

  • Vehicle Lacks Power and is Slow
  • Turbo is Very Laggy, (Spool Up is Slow)
  • Bad Gas Mileage
  • Rough Idle
  • High Idle
  • Engine Stalling

Make Sure You Buy The Appropriate Boost Leak Tester For Your Application. (1″, 2″, 3″, 4″, 5″ etc)

Here are Some Boost Leak Testers Already Made that You can Purchase.

Common Leaks That You Cannot See Are Often Found In Conditions Like:

  • Corroded Intercooler Pipe
  • Corroded Intercooler (Common for DSM)
  • Not Properly Sealed Intercooler Core. ( I saw this on a New Jeep Liberty Turbo Diesel Once)
  • Leaking Blow Off Valve (Common with Greedy, Blitz, and Factory BOV)
  • Holes in Vacuum Lines
  • Broken Seal Intake Manifold Gaskets
  • Dry Rotted Fuel Injector Seals

Steps Too Boost Leak Testing Your Car:

  • Install Boost Leak Tester On TurboCharger Inlet
  • Fill Up Boost Leak Tester Tire Valve With Air Chuck Until You Reach Your Boost Level (25 psi+)
  • Spray Soapy Water All Over Charge Pipes, Vacuum Lines, and Where Every Boost May Go.
  • Search For Bubbles to find Leaks