Fixing your EGR/DPF Problems...

[Rawze]

(07-23-2019 )Devildog1 Wrote:  Thanks for the add. I have 13 cm2350 that I just bought 2 months ago that currently has 575,853 miles. Since I’ve had it I’ve had to put in almost a gal on coolant and I was just chalking it up as egr was failing but yesterday I was changing the delta p sensor and I noticed that there was liquid that seeped out of the threads of the egr temp sensor for a split second after I turned the truck off. Is that where my coolant is going and what do I need to looking at that causes this? Thanks for the response

you need to find out exactly where that coolant is going. Driving the engine with it going into the intake, or through the EGR circuits will destroy the engine very quickly due to accelerated wear of everything from the liners to the crank bearings, and everyting else. It is nothing to play with or take lightly.

-- Start by pressurizing the coolant system with a pressure test set and ensure you do not have external leaks first. After that, check to ensure the egr cooler is not leaking, etc.

Hopefully it is not an internal leak (head gasket, injector cup, etc.).

-- If you are loosing coolant into the engine, egr cooler, or egr circuits, then your engine oil, DPF, DOC, EGR Valve, EGR piping, and possibly the SCR can are all likely toast as well. Coolant will kill all those components too, leaks into the engine or EGR system is nothing to play around with. If that is the case, then the oil needs changing, DOC and DPF pulled, cleaned, de-ashed, SCR inspected for face buildup, all the eGR circuits need cleaning out, all the egr sensors replaced, etc.