High EGT, No Boost and a major boost leak!! PLEASE HELP.

[Rawze]

Here is what I use...

(when doing only the enigne itself): For the Doser pipe,.. I remove the pipe that goes down towards the DPF,.. Then I stuff this inside, and inflate it to 35-PSI.

https://amzn.to/2EdGuLn

For the intake, I remove the air filter and stuff one of these (depends on size of pipe) into the pipe, inflating it to 35-PSI ...

https://amzn.to/2JCbxEe (4 to 6 inch intake pipes)

or...

https://amzn.to/2JE1EWq (8 inch intake pipes / bigger KW's etc.).

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I use a bicycle pump to inflate them.

After I plug the entire engine,.. I remove the turbo inlet temp sensor and have an adapter I made to put about 10-20 PSI of air (with a really good regulator and pressure gauge).


I listen for leaks (it needs to be fairly quiet around the truck),.. and use soapy water on every pipe and gasket, the CAC, and a lot of other components too. It is extremely effective in finding fuel mileage loss and boost leak problems... Even if they are minor.

I also use this with my EVAP machine sometimes and that is very effective too.

You would be surprised at the places that engines will leak, such as a bad air compressor head leaking boost into the crank case, etc. -- I even found a bad EGR cooler once this way that was putting pressure into the coolant system.

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I have always been able to find leaks with the tools I mentioned above, but in your case though,.. you might want to have something made that will allow for even higher pressures to be used.

I also own an EVAP machine. This is a good compliment to being able to plug off the whole engine and/or its exhaust system too and find leaks ...
here is the one I have: https://amzn.to/3iW1e1D

Tags:

pipe plugs, boost leaks, pressurize engine, pressurize entire engine, engine testing