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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It could be a bad headgasket or a stuck thermostat.

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Blueish white smoke comeing from exhaust


Hello There

White smoke when first started is normal. If white smoke continues you have an internal coolant leak, i.e., cracked head/blown head gasket.
Black smoke is caused by a rich fuel condition.
Blue smoke is caused by oil consumption.

You need to check your oil cap for yellow/white gunk on the cap if you have this then this is a sign your head gasket is cracked. Check to see if your radiator coolant level is down this is also another sign.

Hope this helps. Please don't forget to rate me.

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Can a radiator leak make your car smoke white


I have never had a radiator leak cause white smoke. if youre leak is coming off youre radiator then needs to be fixed by a shop or a do it youre self job. the white smoke on the other hand can be cuased by three mian things! one, you have head gasket that is leaking internaly, check by pulling youre spark plugs one at a time to find a clean on, if you find one youre head gasket is allowing coolent into the cylender which means you need new head gaskets and have youre heads inspected to make sure there not worped #two, youre valve guide seals are wore out and they are allowing oil to seap into the cylinder thus you are burning oil and the third cuase for white smoke could be that youre engine is running rich by the fuel mixture being off. but with the car you have i would check yhr first two! i hope this helps.

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White smoke from exhuast, multiple misfires


White smoke indicates water. If combined with misfires it looks like a broken head gasket or water in the gasoline. Check, when cold and just started if the coolant in the radiator burbs exhaust gas... Also check if the oil is clear and not milky, another indication of water in the oild and also points to a broken head gasket.

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Flush coolant system out. If this does'nt help check for white smoke coming out of exhuast while its running.White smoke from exhuast would mean that coolant is getting into one or more of the cylinders,which would mean more than likely a blown head gasket.A blown head gasket would cause it to over heat.If you are loosing coolant and don't no where its going would be good sign that its blown.You would need to proform a leak down test on each cylinder this would let you known which cylinder is the problem.

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White smoke out of exhaust on my 90 Bonneville......Checked oil looks fine.......What should I expect to pay to have head gasket replaced ??


I was going to say the same thing, sign of white smoke blowing out of your exhuast pipe is usually radiator fluid being leaked into the cylinder and being combusted. In this case it look like it's oyur head gasket and it needs replacment. A head gasket repair is a major work to be done, and it may take up to anywhere from 7-12hrs+ depending on how complicated things are. Most of the repair bill comes from labor and installation. In some case, the engine need to be removed from the car and to be rebuilded. You may be looking at a hefty price tag anywhere from the lowest 800 to 1700.oo+ cost wise. The more cylinder your engine is, the more the price will be. Sometime it is cheaper just to replace the engine, or entirely savage the car and get a new one if the repair bill is more then the car is worth.. You'll have to call around your local repair shop to get a quote vs replacing the engine and deciding if it is best to repair, replace, or savage.

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I have a 2002 Buick Century and soon after I start it white smoke comes out of the exhuast pipe. I don't believe coolant is getting in to the oil, so I was just wondering if I can keep driving the car...


If the white smoke comes out for 15 to 30 seconds your engine is ok. Condensation does build up inside the engine and as well as the exhaust and will burn out in that amount of time. If the white smoke is continuely extracted from the exhaust pipe you do have coolant leaking through the head gasket

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My 1996 chevy suburban wont start


If you plugged the original leak (which sounds like the head gasket) and then the radiator was leaking, and you are having water coming out of the exhaust, then you need to replace the head gaskets. It sounds like you had a blown head gasket from the start. Here's what to do.

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
^ valve cover gaskets
^ 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.

carsandcomps,

Guru, Premium Expert @ Fixya.com

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Good Day,

White some indicated that coolant is burning off. It could just be a simple leak which is burning off of the hot motor. It could also be a bad head gasket(probably what you don't wanna hear), One indication that it is the head gasket is white smoke coming out of the exhaust, this happens as coolant gets into the oil and is burned off then exhausted out the back. Possible causes for the overheating include, low coolant, coolant leak, thermostat, water pump and or water pump belt, or head gasket.

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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