why is my rd1 crv not going over 80ks when travelling on a hill?

Wonder what's in the gas tank other than gas? Might want to get a fuel sample and check it out.

A "tin" sound or tinny sound usually has me expecting to find loose heat shields. The knocking sound cold that goes away hot could be piston slap, the thing is I'd have to hear these sounds myself to try to confirm, or rule out those impressions. Not having any power and not getting over 50mph (80kph) needs to be diagnosed separately from the other two symptoms.