What could be wrong?

[pedal2themetal]

HI,
Ok I've got the over heating under control .. but now I have a loss of power and when I get on it I have that Blap Blap sound in my exhaust? did the times of overheating hurt my motor????
it seamed to be fine right after I fixed the over heating but now its doing this?
and the idiot light coming on at idle? i think that is the oil went bad going to change that and filter

 

[OzCharger69]

First of all, what did you change to fix the over heating issue?

Did you touch the timing?

Did you loose oil pressure at any stage?

If you're suspecting that overheating damaged the motor, do a compression test.