Quote:
Originally Posted by smooth move
X2----poppit valve was my first thought. by the age of the engine it would be time for the corrision build up to clog the poppit or thermostats. if doing the work yourself, be very careful taking the bolts out of the thermostats. easy to snap off after so long in the case.
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Take a hammer and hit on the head of the bolts. Hopefully this will loosen the threads some.
OR... if you have another person to help, put a wrench on the bolt and put some force on it while the other person hits on the bolt head. The combination of vibration and twisting force....might get the bolts out.