You sure the thermostat is installed correctly-if so bleed the cooling system if it continues block and pressure test the system

Answered by rasmataz
68 questions asked

Thanks for your reply.And yes the thermostat is installed correctly. I have bled the cooling system. however I have not pressure tested it. I don't have a way to do that. The hissing sound is coming from the backside of the motor and it looked like the shift linkage on the tranny was wet. I could not see well enough to pinpoint the location. Is there a pressure release in the block in that location??? Or might it be the rear head gasket ???

Response from tobarq1
1 question asked

You can rent a cooling system pressure tester. could be from a leaky intake manifold,cylinder head or a feeze plug

Answered by rasmataz
68 questions asked

How would I , other than a pressure test, pinpoint which of the 3 it is ?

Response from tobarq1
1 question asked

Get a block chek-a chemical tester that changes color if there's a combustion leak into the cooling system-check at autozone

Answered by rasmataz
68 questions asked