EGR valve cleaning?

Interesting .. What’s your procedure

 

Follow the instructions on the can.

Spray, soak and rinse with warm water. Lightly blow dry with compressed air.

Just like your oven.......... heavy buildup make take a few rounds.

 

Cummins recommends regular carb cleaner.

 

I find most of the over the counter aerosol carb cleaner, "cyclo" ect. Tend to evaporate too fast.

We also stock this stuff for cooler flushes. It works well and is a water based soap. Very caustic stuff but it works swell.


EGR Cooler Cleaner II-1, Hydro-Zone Inc. Web Store

 

If its sticking, try backing off the 10mm bolt on the EGR and flip it aside ( the teardrop cover plate on the EGR )
A small ( stubby) flat head screw driver put to the EGR valve butt end under that cover ( there's a slot for which to stick flat head onto) and try moving the valve. Should move freely from stop to stop without force. If its tight, Detroit will say " replace it" but spray the ( beep) out of it with a high heat resistant lubricant.
Try moving it again...
Finger tip pressure is a good way to gage it's free movement ( and don't worry where its positioned after toying with it, the EGR will find its proper position via air pressure from the VPOD, etc...)
Using a screw driver tip on a 1/4" socket/ ratchet to access it more easily will help tons, while you keep spraying it to free it up.
Next, spend the $125 at Diesel Power solutions, and install a EGR delete onto the barometric pressure sensor ( looks like a USB stick)
I did, my coolant runs 25-28 degrees cooler, no more black oil, cleaner engine, smoother acceleration & MPG is up a very conservative 0.8 MPG all day, every day.