Well due to a failing head gasket my 4runner was leaking coolant out the side of the block, anywho tore down the motor with the help of my girl friend and this is what it looked like










and corrosion where the coolant was leaking...

 

aww... c'mon. thought you'd have pics of the girlfriend turning wrenches and stuff.

just kidding....

anyhow.... that's just wierd. you can still see the crosshatch pattern in #3 (last pic).

don't worry. I'll be rebuilding an engine right beside you.

 

Can't really tell, but it looks like carbon build up to me. Not something to worry about if it is that. Just pour some solvent (I heard brake fluid works well) on there and let it sit. Should remove it.

None of my girlfriends ever knew what a socket wrench was.

 

wonder where the build up came from?
look at the intake runners (looks like #2 and #3) in the pic below.
brake fluid might clean up the carbon problem on the pistons (not likely, but okay), but not the oil in the intake.

 

i dont know what it is but its even in the upper intake and throttle body, any ideas?

 

looking at that, I bet you'd find worse looking crap on the inside of the upper intake manifold, and on the back of the butterfly valve on the throttle body...

go ahead, take a look, I bet you'll find the good ol nice black goo crap; I can tell it's hit you too form the one pics and being able to see inside the lower intake manifold a little bit


EDIT, ha, I was right... you post too quick man...

https://www.yotatech.com/forums/f116...thread-142091/

 

plain and simple, it's caused by the PCV system.

 

darned PVC

 

You could add a little collector, that way there wouldn't be so much gunk in the intake:

 

how about a pic of that on a 22re?

 

darned dyslexic keyboards.

 

I've been wanting to add one of those, but I'd just assume change the PCV valve every other oil change rather then empty out collected oil every couple of weeks

 

i Kno, it tis agrrivatingg, is not it...

 

the proper ones drain the oil back into the valve cover.

 

I've never seen a proper one then... hmmm...

 

cause they don't exist.

 

well now that would explain why I've never seen one

 

if they were serious about it, they'd use centrifugal force to cause the oil to collect on the outer side of the chamber, then drain the collected oil down into the crankcase, not the valve cover.

a simple separator like in the pic above wouldn't do anything to the aerosolized oil

 

kinda like those pre-filters you can put atop snokels?

 

I think the intent is to re-burn the oil to it acts like some of that top-end conditioner that "Lucas Oil" sells.. kind of seals the valves and rings a tad if you're running it hard enough to blow out through the PCV system.

Either way I dont like it either.