Old26Buick 14 Posted April 2, 2018 Share Posted April 2, 2018 I have a 48 Ford that the left rad. hose keeps coming off the cylinder head. It will idle for 1/2 hour and no leaks, If I give it full throttle for a couple minutes the hose blows off. Have tighten the hose as much as I can and even remove 160 degree thermostat. Thanks for any help. Link to post Share on other sites
19tom40 95 Posted April 3, 2018 Share Posted April 3, 2018 With the hose off and coolant level to the top of the head outlet, run the engine and look for bubbles. You may have a blown head gasket. Link to post Share on other sites
Old26Buick 14 Posted April 3, 2018 Author Share Posted April 3, 2018 19tom40 tried that but keep boiling over. Link to post Share on other sites
19tom40 95 Posted April 5, 2018 Share Posted April 5, 2018 If you see large or small bubbles when you perform the test that I described, you have a blown head gasket. When you pull the head, make sure that you check for cracks around the valves and along the edges of the cylinders. Link to post Share on other sites
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