Alright, I'm about to lose my mind here. I just totally adjusted all the valves to spec with the engine hot. I inspected the timing chain guides and everything seems to be in order. There is still a rattle coming from the front of the motor. What the heck could it be? Maybe the water pump? How can you check and make sure? The 22RE was rebuilt about 20k ago because of the high mileage and a thrown timing chain. I can't quite figure this out. Any ideas?

98 4runner Limited, 33's and stuff
85 4runner - 4 sale
85 Toy pickemuptruk, EFI, winched, locked, rust