The engine overheats at higher
The engine overheats at higher rpm's only. I've replaced the OD impeller it checks out fine. I've cleaned out the heat exchanger and tested it and it's OK. The water pump looks good not sure on how to test it. I've checked all of the hoses for blockage and found none. Any ideas of what I should try next? Could I have a blown head gasket? Any suggestions would be appreciated.
The engine overheats at higher rpm's only. I've replaced the OD impeller it checks out fine. I've cleaned out the heat exchanger and tested it and it's OK. The water pump looks good not sure on how to test it. I've checked all of the hoses for blockage and found none. Any ideas of what I should try next? Could I have a blown head gasket? Any suggestions would be appreciated.