Oil pooled on intake valve??? Related to Recall?

[Tcoat]

Originally Posted by maslin

Rockers can’t really just fall off, they’re stuck between the cam and valve. Something has to move for it to come out. Considering the cam isn’t exactly flexible, that really only leaves the valve.

Which still doesn't rule out a weak spring even if it isn't broken.
I have a hard time believing that this is a coincidence.


YES I really am this stubborn!

[maslin]

Originally Posted by ermax

The pin holding the roller is known to come apart on early builds. Mid 2014 the valves (longer), rockers and pivots (smaller oil hole for more lift) were revised to combat this problem. So yeah they don't just fall off, the roller comes loose and then they fall off.

I've seen some pictures of that. Should be pretty obvious if the rocker is in 1 or 3 pieces. Is the shim captured in any way? Or is that small round chuck of steel bouncing around in there as well?

[ermax]

Originally Posted by maslin

I've seen some pictures of that. Should be pretty obvious if the rocker is in 1 or 3 pieces. Is the shim captured in any way? Or is that small round chuck of steel bouncing around in there as well?

Not captured, it just sits on the end of the stem so yeah it would probably be bouncing around in there too.

[humfrz]

Regardless of what busted or came unglued, how did all that oil get up (over) there? Or, did I miss something?





humfrz

[kt45]

I can see how it fell out.

[ermax]

What am I looking at? It seems to be in one piece. Are you saying you "can't" see how it fell out?

[ybotspawn]

Dumb question...this is a 2013, could this be the result of the rocker arm axle failure that plagued them?

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[ermax]

Originally Posted by ybotspawn

Dumb question...this is a 2013, could this be the result of the rocker arm axle failure that plagued them?

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Well judging by his picture it doesn’t look like the roller is detached so I guess it’s something else. Having one pop out without something breaking is a good trick.

[kt45]

So that roller bearing is supposed to be thin on one side.

[ermax]

Originally Posted by kt45

So that roller bearing is supposed to be thin on one side.

I can’t make much out from that picture. It sort of looks like it’s off center if that is what you are referring to. The picture is kind of blurry.

[ls1ac]

That looks like an intact rocker arm, they are held in place by the spring pressure on the valve stem. I have seen them float around at high RPM or with a broken or week valve spring. To have one come out of position almost always means a broken spring. And Usually you would have the piston hitting the valve.

[kt45]

Update for anyone that is interested.

Did the recall procedure myself. Replaced springs, made sure valve clearances were correct. Two intake valves had excess clearance, not the valve that lost the rocker suprisingly. Took the procedure a step further and replaced the head gaskets. Starting it up i found that the spark plug for the cylinder that lost the rocker was fouled. Replaced it and now my car can now can idle without stalling with no codes however it still makes the same but slightly 'better' rattle sound from the engine, that I could not figure out where it is coming from. It sounds like rod knock/spun bearing.

Given all of the issues with other cars having spun bearings after recall work and that my car likely spun a bearing before the valve job, Im thinking that some of it isnt a problem with the warranty work itself but rather a manufacturer defect that is somehow corellated with the affected J02 VINs

Going to pull the bearings soon when I have time and see if my short block is still fixable.