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Search Auto Parts Search Mechanic told me i have a blown head gasket Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine and Car Noises joaovily New User Jul 3, 2021, 9:31 AM Post #1 of 3 (761 views) Mechanic told me i have a blown head gasket Sign In Mechanic told me i have a blown head gasket Yesterday i had a mechanic come over and change the serpentine belt and valve cover for my engine, it had been leaking oil previously and that cause the belt to slip off which subsequently caused my engine to overheat. I was only 5 minutes away from home so i drove back stopping every time it overheated. He was doing some tests by running the engine at 4rpm to check if the coolant system was working, the coolant boiled every time, so he told me the head gasket was blown. Today i ran some tests but i bled the radiator and added more coolant, and closed the cap. The temperature gauge on the dashboard wouldn’t go past the middle, and the coolant seemed to be normal until i opened it and it boiled out, is that normal? Also my radiator fan is not kicking in during this test Hammer Time Ultimate Carjunky / Moderator Jul 3, 2021, 9:39 AM Post #2 of 3 (759 views) Re: Mechanic told me i have a blown head gasket Sign In He may or may not be right. It sounds like he may have jumped to conclusions or maybe something more devious. He knows or should know that water boils at a lower temperature when it's not under pressure and having air pockets makes it happen quicker. You can't run these cars with the cap off. Time will tell. Some bad head gaskets very slowly consume coolant so the problem doesn't show right away. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Tom Greenleaf Ultimate Carjunky / Moderator Jul 3, 2021, 11:36 AM Post #3 of 3 (746 views) Re: Mechanic told me i have a blown head gasket Sign In Sorry you drove it at all. I'll try a neat picture of what a head gasket is really doing in most any engine that's liquid cooled AND pressure lubricated. Hope it shows>> It's sealing EVERYTHING meaning so you have compression, oil can pass thru, coolant separated and pressure of combustion from one cylinder to another. Diagnosis is my least fav without clearly demonstrating it is in fact leaking. It could have been the oil leak but doubt that for now is not out of the question if valve cover leaked or was just soaked where it shouldn't be? Watch ALL fluids for leaks not just coolant and keep it a mix it needs it. Belt of rubber would eventually fail from oil you didn't say what this is to help. Hope that pic shows it's priceless, T   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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