Yes, I replace this, no help. I checked the EGR valve by pulling a vacuum with the truck idling. The engine stammered a bit but not much – makes me think that I have blockage restricting the flow.
I considered spraying sea foam into the exhaust side DPFE hose while pulling the vacuum on the EGR valve. I figured it would be sucked through the orifice and ERG valve and clean out any carbon that might be restricting things. But then I decided to take the easy way out – it goes in to the shop tomorrow.
