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93 mustang possible bad head gasket?
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<blockquote data-quote="Detroit Iron" data-source="post: 16705277" data-attributes="member: 137666"><p>I was one of the unlucky ones to have a head gasket blow on a stock engine. I think it is pretty rare on these cars. I had a 91 coupe back in the day with a bone stock engine and about 60K miles and I had a seeping head gasket leak that was intermittent. One of the most frustrating problems I've had owning a car. I was on the highway one day and the temp gauge went from normal to red in 10 seconds. I pulled over and had coolant bubbling out of the overflow. I let the car cool and it drove fine after that. I changed the thermostat and radiator cap after that it was fine for months until it happened again and then it blew completely. I had milk shake or tell tale signs. The engine was seeping hot gases into the coolant passage thru the bad head gasket.</p><p></p><p>I doubt you have blown head gasket from what you described. Having pressure in the system after the engine cools off sounds like a bad radiator cap. You're going down the right road with changing the radiator cap, water pump, thermostat and hoses and get all the red coolant out. Stick with the motorcraft stock 192 thermostat, stock engines like these and they don't fail like the parts store brands. You also may want to look at the radiator. Even low mile cars will eventually leak due to corrosion (totally normal for 30 years.). I had my stock radiator recored at a shop after it started leaking. I would rather keep it stock and support a local guy than buy some shiny aluminum Chinese POS. </p><p></p><p>Keep us posted and don't get frustrated. All these old cars have quirks that need to be worked out.</p></blockquote><p></p>
[QUOTE="Detroit Iron, post: 16705277, member: 137666"] I was one of the unlucky ones to have a head gasket blow on a stock engine. I think it is pretty rare on these cars. I had a 91 coupe back in the day with a bone stock engine and about 60K miles and I had a seeping head gasket leak that was intermittent. One of the most frustrating problems I've had owning a car. I was on the highway one day and the temp gauge went from normal to red in 10 seconds. I pulled over and had coolant bubbling out of the overflow. I let the car cool and it drove fine after that. I changed the thermostat and radiator cap after that it was fine for months until it happened again and then it blew completely. I had milk shake or tell tale signs. The engine was seeping hot gases into the coolant passage thru the bad head gasket. I doubt you have blown head gasket from what you described. Having pressure in the system after the engine cools off sounds like a bad radiator cap. You're going down the right road with changing the radiator cap, water pump, thermostat and hoses and get all the red coolant out. Stick with the motorcraft stock 192 thermostat, stock engines like these and they don't fail like the parts store brands. You also may want to look at the radiator. Even low mile cars will eventually leak due to corrosion (totally normal for 30 years.). I had my stock radiator recored at a shop after it started leaking. I would rather keep it stock and support a local guy than buy some shiny aluminum Chinese POS. Keep us posted and don't get frustrated. All these old cars have quirks that need to be worked out. [/QUOTE]
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