Strange cooling system issue.

[Triple]

Originally Posted by No Worries

I'm pretty sure that Toyota copied the Chevy engine. The pushrod runs off the cam, and something like the water pump could also run off the same pushrod or something.

Not saying they couldn't be related, but the 22r's water pump is belt-driven from the crank. It is a strange coincidence that it started overflowing coolant right after replacing the fuel pump, however.