Can anyone tell me how to check the EGR cooler for leaks on a 2007 EPA Maxxforce DT? Have one that is using lots of coolant, but no external leaks. I can only imagine it is the EGR Cooler. Oil does not look milky and it seems to have a hint of smoke/steam coming out of the exhaust.
I just did a mf7 a couple weeks ago . It filled number 8 cylinder up with coolant and hydrolocked the engine for the morning startup. You can also see black stuff leaking out the turbo /headpipe clamp. Those coolers are actually easy to remove. Once out you should see coolant inside . I hook a hose up to the coolant pipe while on the bench and pressurize with 20psi air. Dunk it in a bucket or plug one end and fill with water . If its leaking you will get bubbles . Let it sit for a while and just look for constant bubbles.
Update: Got bus back together with new EGR cooler and DPF cleaned. It was wanting a regen, but would not do it. Hooked up laptop and had active code for VGT performance. Pulled turbo and pulled it apart. It was pretty disgusting. We are going to get a new turbo and get this one rebuilt and put it on the shelf for the next one that goes down.
Maxxforce DT EGR check
Posted - 02/09/2016 : 06:23:38 AM
