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Symptoms of Warped heads

Discussion in 'The Garage' started by TXsizeK5, Sep 29, 2003.

  1. TXsizeK5

    TXsizeK5 1/2 ton status

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    yeah so, if you warped your heads due to overheating, or anything like that, would would be some symptoms?
     
  2. mudjunkie 82

    mudjunkie 82 1 ton status GMOTM Winner

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    Blown head gaskets,Smoking out of the pipes, using a lot of coolant, motor runs like crap..........................
     
  3. chebywanna

    chebywanna 1/2 ton status

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    overheating?
     
  4. BorregoK5

    BorregoK5 1/2 ton status

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    A warped head usually ends up in a blown head gasket. Do a compression test and write down each cylenders pressure, then compare all of them. The highest and lowest should be within 20 psi of each other. If 2 of the cylenders next to each other have the same low reading, its a good sign of a blown gasket between them. With the vehicle cold, pull the radiator cap, top off the radiator and start the truck. If the radiator bubbles like crazy, chances are you have a blown head gasket. If your PCV valve and press on oil cap keeps blowing off by themselves when you rev the engine, it could also be a blown head gasket or worn/broken rings. Check the bottom of the oil cap for milky white residue, good sign of a blown head gasket.
     
  5. TXsizeK5

    TXsizeK5 1/2 ton status

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    yeah i heard to run it for a few min and do a few revs and if the radiator hose gets real hot and isn't able to be collapsed by hand, then you're heads probably been warped, or whatever... i checked for that and it was fine... everything seems to run fine so I should be okay right.
     
  6. BorregoK5

    BorregoK5 1/2 ton status

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    Well, that could be as simple as a stuck thermostat. Once the truck heats up, the radiator cap will allow up to 15 psi before bleading off pressure. The radiator hose can feel hot normally, and also can resist squezing it under normal conditions.
     
  7. TXsizeK5

    TXsizeK5 1/2 ton status

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    yeah but it would normally take a while to get that hot or build up that much pressure, running it for just a short while wouldn't unless experiencing the warped head or some other ailment, or am I wrong?
     
  8. BorregoK5

    BorregoK5 1/2 ton status

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    If the thermostat was stuck closed, it would heat up fast. Pull the thermostat and boil it in a pot of water. sometimes the wife will have a cooking thermometer you can use to test and make sure the thermostat is openeing at the right temperature - or , yank the thermostat and run without it for a day - see if it still gets hot.
     

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