EGR/Intake Service on 2013 Prius

That's a good point. And all the intake manifold needs is high pressure water anyway.

Nice!! Most people leave something unplugged the 1st time or two and get a trouble light. Well done.

 

I prefer brake cleaner and (mostly) elbow grease. Not copious brake cleaner either, just enough to loosen up the deposits, then “floss” the various passages, with rags/brushes. Use the brake cleaner over a catch pan, and if there’s enough to pool, pour that over a small tray of kitty litter, leave it out back to evaporate.

I appreciate time is money, especially in a pro environment, but pressure washing bothers me, especially for the intake manifold with its PCV supplied oil/gas/water cocktail. Our storm drains go directly into streams.

 

Last time I cleaned ours I did replace gaskets, just the pliable ones on the intake manifold. I ordered them from Amayama, which still has a sane interface. And they’re cheaper, all the way from Japan or United Arab Emirates. And so far only charge shipping, nothing more. The few times I’ve tried, I’ve found US dealerships won’t ship to Canada, so there’s that lol.

regarding pollution, if I can use a method that’s just as thorough, if not more so, and a lot less dramatic, and only takes a little longer, and avoids a “raw dump” requiring “dilution”, I’ll go that route; Mother Nature’s already got a lot to do.