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YOUR RESEARCHNeed advise on what else to replace...
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Clean nice
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Suggestion
Yes, your valves are very very clean, nice to see...
Leading evidence: 'Clean nice' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean nice' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion · Original poster
Maybe but because I had to replace the coolant tank, having all that stuff out really makes the job easier.
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Suggestion
I’d replace the plastic coolant connect with an aluminum one, or eliminate it completely.
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Things I've removed so far:
AOS
Drivers side intake manifold
Coolant recovery Tank
AOS Crossover line - broke while trying to remove
The AOS started failing and I was able to pull over quickly and shut it off, engine was still running smoothly.
See each picture for my questions:
Pic of where the AOS was, thoughts?
Another view.
See that red o-ring at the bottom, what is that?
Looks like the oil cooler is leaking. If I replace the seals will I have to remove the passenger side intake manifold? How much of a bear is replacing these seals?
I'm pretty sure this coolant was from before I drained the coolant and that famous T broke and lots of coolant bubbled out. You guys agree?
Condition of the intakes, seems like residue from the AOS starting to fail. Yes?
another view...
Notice how clean the valve area is? Testament to always running Chevron Premium, cuz it has Techron!
What do you think
@Porschetech3
and
@TexSquirrel
?
1 . Yes, your valves are very very clean, nice to see...
2 , yes the residue is from the failing AOS, there will always be a little oiliness due to "oil fumes" going through the crankcase ventilation system though .
3. Yes, that looks like coolant from where the plastic splice that sends coolant to the AOS . The UAOS kit has everything to eliminate all this if you want .
4. Yes, looks like the O-rings under the oil cooler are leaking. Just 4 bolts to hold it on, 2 you can see right in the picture and 2 on the other side. Yes you can remove it without taking the other intake manifold off.
5.the red o-ring, is not an o-ring at all. it is a red plastic un-locking piece that is part of the quick connector for the power steering hose.. it takes a special tool to unlock the connector, ( a U-shaped fork like tool)
Since you nwo have the AOS out, do you think you could have done it without taking off the drivers side intake manifold?
Maybe but because I had to replace the coolant tank, having all that stuff out really makes the job easier. Plus it also increases my confidence factor that everything will be okay when I put it all back together.
Good thing you have that cayman to drive while you're wrenching on the 996!
My lil 986 is in pieces at the moment on the AOS job and a few others. Good job catching the AOS failure!
That red clip is a bit of a bear. My power steering fluid reservoir was leaking so I ended up using a piece of an e30 AC condition system bracket as a fork like tool to push the red clip in and pull the tube out, talk about jack leg!!!
Still leaked a little bit; only thing left was the black coating on end of the tube. Never could figure out what the covering was so I used heat shrink on the end and trimmed it off. Has held dry for two years.....
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