EGR Cooler Leak Check X15

[Hermjeji]

Hi Folks,

Long time since i've posted on here, been occupied with some complementary business expansion and family life. But have been lurking

Ive got a X15 CM2350 X116B from 2017. It's got 18,000 hours on it, hauls heavy at ~60,000 kgs. Bought the truck used 5 years ago, and its been demandated by folks from this forum for the last 2 years now. Excessive coolant consumption at about a gallon every 2 days, fixed all external leaks. I've sat the truck now and have some time to do some trouble shooting.

1. When the truck is turned on, coolant level drops, and then when the truck is turned off coolant level returns to normal.

2. EGR cooler was replaced almost 6 years ago.

To do the test on this model EGR cooler, I want to confirm what I remove before I complete the 20PSI pressure test.

Is it just this clamp on the outlet side of the EGR i need to undo and place a dish under?
https://imgur.com/a/wYkhqfM



There's also an entire coolant strip test procedure on quickserve now, but with it being demandated, doubt that will do any good. https://quickserve.cummins.com/qs3/pubsy...urn%20tube


There's some blowby evident as well, but I figured I would drop the pan after ruling out the EGR cooler.