I re-read this thread finally.
As mentioned already, timing chain and tensioner failures are basically non-existent in these cars. But anything can fail and there's a first for everything.
I wouldn't get too defensive about everybody doubting you and your brother's troubleshooting abilities. Most common problems are posted on this forum. You won't find a timing chain thread here.
I'd get a second opinion before tearing the engine apart. Paying a whooping $63 to have a second set of eyes and ears by someone that would hopefully have more experience is worth it in my opinion.
If you do indeed have an effered timing chain I'd really consider just replacing the engine with a used, low mileage one. After you buy head bolts, timing chain, tensioner, guides, gaskets, and spend all that time...you probably could have just replaced the engine. Sometimes it's quicker and more cost-effective to replace something than try to repair it.
But speculating the cause of a noise that you've never shared is pointless. You could have anything from a floppy air cleaner(already suggested and probably the most common source of noises) to a loose belt.
And...if your chain is so sloppy it's causing noise there's a good chance it would have died already because these are interference engines.
The only actual engine noises I hear from these cars is injector tick and bottom end knocking.
Does your engine sound like this
https://youtube.com/shorts/Io9r5PRbIFw?feature=share
or this
https://youtube.com/shorts/B_DavJ1ZLfY?feature=share
Ninja Turtle
the snowballOriginally Posted by Fummins
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