Anybody please help, I have twin 240 hp turbo Perkins (1986, 3,600hrs.). For the last few hundred hours one of them will run too hot at rpms over 1,800-the higher the rpms the hotter it runs. I have checked and done all I can think of:from the thru hull to the water cooled exhaust elbow all seems to be clear & clean and I even solution back flushed it. The fresh water side has been solution circulated & new anti-freeze water. All this resulted in just a very little improvement. Could this be an engine mechanical problem or ? just causing too much heat for the capability of the cooling system? Any ideas??? _____________________________________________________________ Put an end to annoying pop ups! Click here! http://thirdpartyoffers.juno.com/TGL2121/fc/Ioyw6i3nCB2Xsa4yM0PQYbX2WHYUq1yGc 2VNBbAcz5u8q3YJxFbVBi/