Full on intake, egr, throttle cleaning

There might be things I do that would fall in the same category, but I don't think I push them as aggressively on other people. If I mention them at all, I'm likely to say something along the lines of "the repair manual doesn't give any instruction to do this, and obviously lots of people just follow the instructions and call it a day, but I like to ... because ...".

 

I thought it was weird there was a vent valve at all on a front engine car. Typically you only see them when the engine is in the back and radiator is in the front. I owned and raced a lot of MR2s when I was younger and got real familiar with using these valves to bleed coolant on those, since they all had issues with thermostats and I had to replace a bunch of them.

 

You do not need to open any bleed valve.
The key is to fill SLOWLY, and a little at a time. This give the coolant time
to push out the air. Filling quickly causes pockets.

 

All our Hondas had them. As you fill the coolant you can feel air rushing out. Full disclosure: don’t recall doing that feel test when I did engine coolant change on our ‘10 Prius, at 10 year mark (with bleed valve open). Will the next time round; a couple of years from now, at 15 year mark.

 

There is absolutely zero doubt that if you open something at the top of a cooling system, you will feel air leaving there as you pour coolant in.

Just doesn't bear on the question of whether the procedure in the manual needs such additional steps tacked on.

 

I see no mention of oil catch can, which is good. Save that for another day.

 

I don’t think it’d help. I’d just clean the whole system? At least every 50k. Toyota screwed the pooch on 3rd gen EGR, and doubled down by keeping sthum about it.

 

The number isn't quite the same, but it reminds me a little of that old CNW Marketing "study" that said a Hummer uses less lifetime energy than a Prius ... by assuming an H1 would be driven for 379,000 miles but a Prius only for 109,000, and then plugging those assumptions into some simple math.

 

Funny, I did all the same things plus OCC in one go and then apparently I also missed to connect one of the vacuum hoses to intake manifold(IM). The ICE started rough then shut down and then a scarry message came up "check hybrid system". I tried not to panic and re-check all connections again and found that one vacuum hose was not connected to IM. After fixing that all went back to normal. Lesson learned: no rushing, re-check everything

 

Glad you got it all finished, with only minor issues...

 

It's not worth the effort. It will never clog up. The cooler will clog WELL before
the pipe does.

 

Agreed, IMO the two ends are the most important (intake manifold EGR passages, and the EGR cooler/valve) to keep clean and flowing.

SM-G781V ?