Is there a reason to go into the timing chain cover?

I bought my ‘13 back in January. I just discovered someone has been into the timing chain cover for some reason. Only 2 previous owners.

The only thing in there I can think of replacing in there are the timing chain guides.

Truck has about 175,000 miles.

what do you guys think? Are these a common fail on light-duty trucks? This is my first truck smaller than a class-a.

thanks

 

Timing issues are not common... tho you don't make any mention of which engine your truck has.

Anyway, if I assume 5.7, the cam "towers" seaping oil would be much more common. Resealing the cam towers would require removal of the timing cover.

 

i have the 4.6

 

Ah ha!

...I believe the 4.6 suffered from the same oil leak.

I know you can register your VIN with toyotas website(.?) and get info regarding any servicing or maintenance performed thru the dealer network.

Might be worth a look to satisfy your curiosity