Pinto Car Club of America

Hello,
         I have a 1978 Mercury Bobcat with the 6 cylinder auto transmission in it.  The problem is that the radiator (upper) hose after driving enough for the motor to warm up swells. There is a lot of pressure built up in it.  If I relieve the pressure the hose goes back to the normal size.  I have blew two hoses already and had one hose come off of the radiator even though I had the clamp on really tight.  I cant figure out why this is happening! 

On a side note I have replaced the water pump and the thermostat because they needed to be. The radiator was replaced as well.  Any help would be great.

Thanks Tim

hi i have a 77wagon 2.3 went i first had it and  after it warmed all the way up it would spill out antifreeze in a puddle on the ground. new radiator cap and a plastic overflow kit took care of the problem.get a correct new cap and kit this should help.  chris in ca.

Tim1223.......It is the radiator cap....get a new 13 pounder and problem solved.


                                                                                                         High_Horse

Thanks for the information. I really appreciate it. TIM