Question about 2004 Hyundai Elantra

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While driving, white smoke started coming out exhuast and lost compresion. Do I need to replace the head gasket and check the radiator for leaks?

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Hello qpsipsi: My name is Roger and i will help. The white smoke indicates coolant in the exhaust system. If you check the radiator it also should be low. If you lost compression in one or two cylinders .you should find them next to each other in the fire line. This would indicate a blown head gasket. If you lost compression in all cylinders. This would indicate a warped head and possibly a bad timing belt. I would remove the head and have it checked by a machine shop. I would also replace the timing belt with a kit as opposed to just the belt. Also replace the water pump. The kit includes new idlers. If the idler or the water pump go bad they will shred the belt and you will bend valves when this happens. Should you need further help lease just ask. Please rate the answer. Thank You for using Fix Ya. Roger

Posted on May 05, 2010


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My 1996 chevy suburban wont start

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1. Replace the head gaskets (will need intake manifold gasket as it need to come off for this procedure).

2. Replace thermostat, radiator cap (if radiator is still good)

3. Replace water pump; the water pump may have stopped working (mechanical), which in turn caused the pressure to build an blow the head gasket (the cause of the pump would be a bad thermostat. If the truck was overheating, then the thermostat was bad to begin with, then the pump, then the head gasket, so then the only place left for the water to go is out the exhaust.

Here is a list of replacements:

^ water pump
^ thermostat
^ head gaskets
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^ radiator cap (if radiator is good)
^ radiator : if leak from cap caused any damage to radiator (should still be good)

**Also check the radiator hoses to ensure they do not have any "bubbles". Hot water over time (with anti-freeze) erodes the inside of the hoses, and begins to "dig" holes and grooves in the hose, which evetually cause leaks. Consider replacing these as well for safe measure.

Please, let me know if you need further assistance.


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Good Day,

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If I were you I would drain and flush the radiator, then fill it with new coolant, and change the thermostat, provided you have no white smoke coming out the exhaust.

hope this helps for now

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