Xoutpost.com - New E53 Owner intro/Boost leak (I think)

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- X5 (E53) Forum (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/)

- - New E53 Owner intro/Boost leak (I think) (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/108834-new-e53-owner-intro-boost-leak-i-think.html)

Scott ZHP

09-11-2018 06:31 AM

Quote:

Originally Posted by wpoll (Post 1141382)

Not sure this will work that well with a turbo in the way... Would likely need to introduce the smoke at the turbo outlet (inlet to the HP hose going to the intercooler).

And the leak may not show up without significant pressure - at least 2 bar.

Given that there are only the two large hoses and the intercooler between the turbo outlet and the EGR inlet, this section is easy(ish) to check. After the EGR is the inlet manifold - harder to check.

https://i.ebayimg.com/images/g/TW0AA...CID/s-l500.jpg

A few PSI isn't enough to spin the turbo. Forgot we're dealing with a diesel here though.

Just did this very test on my A4 to diagnose a leaking wastegate.

wpoll

09-11-2018 06:44 AM

Quote:

Originally Posted by Supra (Post 1141423)

... Also, am I right in thinking the front bumper & crash bar have to come off to get the intercooler out, I read somewhere that the fan has to come out too? Do you know exactly what need to come out to get access?

Thanks

Yep - all has to come off...

Front Bumper...

https://www.newtis.info/tisv2/a/en/e...40-fan/AHFXq0g

Front cross member...

https://www.newtis.info/tisv2/a/en/e...40-fan/A1bFGBU

Aux fan...

https://www.newtis.info/tisv2/a/en/e...40-fan/ADMZEZG

And here's a larger intercooler fitter to an E53! ;)

Supra

09-11-2018 07:06 AM

Quote:

Originally Posted by wpoll (Post 1141425)

Jeez, thats a lot of work on an old motor where things are going to break snap etc. So I have come up with a plan for the weekend if I have time and weather permits: Will block off the turbo end of the rubber hose to the the turbo end of the intercooler feed, pull off the hose to the EGR delete and make a simple adaptor to allow me to charge the intake pipes and intercooler up with some compressed air monitoring the pressure and see if it holds out, hopefully as I get over 1 bar ish whatever is giving out when I am driving will become apparent. I will let you know and take some pics too.

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