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With the insulation or without?Holds the PS hardline section
mine might be pro off? another question I have is there any coolant running through the Cooler (25680)? or just Air?Toyota calls it a “stay”. You can see it on the drawing. It holds a little u-bolt that clamped around the EGR flex pipe.
I can tell you from experience that the EGR flex pipe u-bolt with that associated stay isn’t necessary. It was overkill — even if the cruiser only drives on rough dirt roads.
View attachment 3000413
yeah that looks more like it!
I don't have that U bolt brakes eithermine might be pro off? another question I have is there any coolant running through the Cooler (25680)? or just Air?
is the EGR system working at all if a air pump is not installed?The EGR cooler is just a heat sink. No coolant inside.
As a side note:
The EGR cooler rusts on the inside too. Chunks of rust can dislodge and get stuck in the EGR valve, preventing it from fully closing, or pass the valve and get sucked into a combustion chamber to be bounced around inside there for a while.
I removed some lodged rust chunks in my EGR valve (engine wouldn’t idle- huge vacuum leak) and the chunks were like metal stones. Very hard.
View attachment 3000661
maybe my hard line portion is not turned correctly to sit in that bracket
I emptied it out and chiseled out more loose stuff, then wiped it down with brake cleaner and a wire brush. I don’t know what to do now … paint it? Like that will last with 1000*F+++ heat and spraying on a terrible surface. Close it up and run it?Holy crap!
That rock pile is inside every single EGR cooler - spitting pebbles up into the engine every once in a while.
Geezus
How’s that holding up? Probably haven’t taken it apart to check, eh? I wouldn't either.I painted mine with POR manifold paint. Couldn't hurt, but I had some leftover.
Close it up and run it?
Another fun item to add to the yearly maintenance list!!!! I better stock up on anti seize.Yeah that’s all you can do. No paint is going to last long inside.
Now that you’ve opened it up - maybe open it up every year to inspect it and chip out more rust.
How’s that holding up? Probably haven’t taken it apart to check, eh? I wouldn't either.