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Originally Posted by Stang70Fastback
I've also heard rumors that there are a not insignificant percentage of vehicles returning with issues after the valve spring repair. So it's possible that the techs are doing something wrong, or weren't trained on an extra step, or just that something is going wrong during the repair in general that nobody foresaw. Maybe they didn't explicitly spell out "DON'T LET OLD GOOP FALL INTO ENGINE," in the instructions. Who knows, but someone at one dealership in one of our FB groups said they were actually completely stopping doing the repairs until they got more guidance from Subaru/Toyota due to 10% of the repaired vehicles being brought back with further issues.
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There are lots of things not explicitly spelled out but a mechanic should know not to let shit fall in an engine without being told. It’s just easy to have crap fall in anyways. Unrelated but I’ve seen a few reports of damaged OCVs. This is something that probably should be added to the instructions. The connectors are in such vulnerable positions.
Rereading the instructions they actually do explicitly tell you not to let packing fall in:
The recall instructions are damn explicit about just about everything. It's way more detailed than the original manual. Maybe dealers aren't using the recall instructions and are instead using the manual.