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My corolla sprinter has problem in its cooling system that it overheats too much we have tried to replace a new cylinder head gaskette and tested/measured the cylinder head block but still the problem exist moreover the radiator is also cleaned. what should i do then

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Check spark plugs/ignition coil

Posted on Feb 09, 2014

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Posted on Jan 02, 2017

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SOURCE: 1999 cadillac deville overheating

my husband did everything that everyone else did that had this overheating problem. It was so weird that my engine cooled at a light and heated up going down the road. I have a north star 4.6 engine and this is natorious for happening. my check engine light also came on and so I had a diagnostics done which told me my #1 injector wasn't firing , car ran like **** as well. After putting in a new water pump and plugs,ect. and realized injector was good a friend told him we could have a blown head gasket. So just to see if this was the problem I went to buy a bottle of glassbeads and the auto parts guy told us to purchase a bottle of BARS STOP LEAK BLOCK SEALER NOT RADIATOR BUT BLOCK SEALER $31.99 . He followed the directions and we waited 24 hrs. before driving it. What ever the problem was has stopped my car runs like brand new and I am loving it again. no over heating no injector problem, runs great.......I hope this helps. I know its probly a temperary fix but its a fix and now we know what the problem was. SASSY

Posted on Mar 19, 2009

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SOURCE: Can't Burp the cooling system - Overheats

If you can't remove all the air by filling while running with heater on hot, there is a possibility that you have a leaking cylinder head gasket (pressure from there will fill the cooling system and displace coolant) To test, have a shop do a hydrocarbon test on the radiator. Hope I'm wrong, but quite often on those I'm not.

Posted on Apr 19, 2009

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Still smoke water exiting exhaust.did gaskets on both rocket covers new oiln&filter


From what you have described you have radiator coolant leaking into the engine cylinders.

This will not be rectified by changing the gaskets on the rocker covers. That just stops engine oil leaking out from around the edges of the rocker covers.

The coolant will be leaking internally due to a failed cylinder head gasket and/or a crack in the cylinder head(s) and/or even a crack in the engine block. You will most likely also have combustion gasses leaking into the cooling system passages from one or more cylinders. I expect there will also be some coolant finding its way into the engine oil.

If you have allowed the radiator coolant to run low and hence for the engine to overheat at any stage that will cause the problems you have now.

You need to have tests run to check if you have a failed head gasket(s) and in that event the cylinder heads will need to be removed, the head gaskets replaced and, while removed, the heads checked for cracks, checked for any warping and overall condition. The engine block will also need to be checked.
If you run a compression test on all cylinders you will likely see the compression lower than spec in a number of them. A leak down test on each cylinder will show which cylinders have coolant leaking into them(and combustion gasses leaking out into the cooling system) and certainly confirm the need to remove the cylinder heads.

If you start the engine cold with the radiator cap removed, once the coolant has warmed and begins flowing from the engine via the top radiator hose to the radiator you will see bubbles in the coolant if there are combustion gasses leaking into the cooling system as described. This is an indication, (because the bubbles can also be air not properly bled out of the cooling system) but you still need to run a leak down test.

You need to have the problem checked out immediately as you do not want to be running the engine in this condition. Make sure you also check the level of the coolant in the cooling system and top it up when the engine is cool if not full. Coolant can escape quickly under normal cooling system pressure when the engine is running.

Apr 17, 2016 | Cars & Trucks

1 Answer

88 toyo 4x4 installed new radiator and all hoses now not running very well was fine before


Did the engine overheat before new radiator? :Likely blown head gasket. Check compression on all cylinders. If compression is good, then try bleeding air out of your cooling system.

Apr 20, 2014 | 1985 Toyota Pickup

1 Answer

Overheat


With due apologize I do not know about the model year, engine code and other specs of your car. But check the following to solve the problem.
- Check Tire inflation.
- Check the clutch and pressure plate (if manual transmission).
- Check the accuracy of temperature sending gauge. (the fan should automatically start when the temperature gauge reads center position position on the combination meter.
- Check the radiator fan air flow, throw pressure and fan direction (should throw the air inside towards the engine).
- Check radiator cap and reservoir for air leaks. Perform cooling system pressure test.
- Check all the radiator hoses for firmness. Any scale or coolant color can reveal the leakage.
- Re torque all the cylinder head bolts a little more.
- Check color of engine oil. If the color is seen brown or excessive pressure is built inside the cooling system, due to the exhaust gases released into the cooling system, the cylinder head gasket is burnt. If so replace the gasket and surface grind the cylinder head with a surface grinding machine.

Mar 25, 2014 | Toyota Corolla Cars & Trucks

2 Answers

94 Jetta w/2.0 engine overheats.I took it to a mechanic and he said my thermostat was fine.So what else could be causing it to overheat??And it does have a small oil leak too but I can't pin point it.


Overheating could be anything in the cooling system. Thermostat is out, could be radiator, water pump, broken belts which cause the water pump to not move, cylinder head warped, cracked, or the cylinder head gasket.

Aug 06, 2010 | Volkswagen Jetta Cars & Trucks

2 Answers

Toyota pick up overheating. Recently,


It could be a bad thermostat, the Clutch Cooling Fan is not engaging or you may have air in the cooling system still and it need to be bled out.

Jul 02, 2010 | 1992 Toyota Pickup

2 Answers

1995 Toyota Camry 4 cylinder runs hot


Hi,

Firstly, ensure you have the required 'mixture' of coolant/water (must have required coolant).

Second, I would recommend you re-test all the cooling system sensors again (make sure they're within specifications), in case a new one is faulty.

Third, ensure the new thermostat was of the correct temp setting (they all differ), so that it opens at the required time. Most cooling systems operate within 90 - 100degC.

Fourth, make sure the radiator (and associated hoses) aren't blocked.

If your temp gauge is reading higher than normal, but NOT in the danger zone...then this can be considered normal (especially if you've replaced with new components) and nothing to be concerned about.

However, if the temp gauge IS in the danger zone....then this suggests the coolant is not flowing through the cooling system properly.

If all above components test ok, then it's possible your water pump may not be pumping enough volume.

Cheers,

Aug 16, 2009 | 1995 Toyota Camry

1 Answer

I have a 98 Accord that continues to overheat. I


Definate cylinder head gasket or cracked cylinder head. Compresion from the engine cylinders getting into the coolant system and blowing out the water. But what you have done so far is money well spent as something had to cause the overheating to begin with so fixing the cylinder head problem would have been one problem solved but not a complete fix.

Aug 11, 2009 | 1998 Honda Accord

2 Answers

My 1998 volkwagen golf is over heating, the water pump and the gasketts have been changed, but its still alarmingly high. What could be wrong???


i have an identical problem. water temp goes up. oil temp climbs then drops then goes higher than usual. i checked my water pump, replaced thermo switch, replace thermostat, refilled with new oil and oil filter, refilled radiator with new coolant. still the same. i suspect the last thing is a warped cylinder head, but it could also be just my radiator cap that is not releasing/retaing the proper pressure, because there is quite a bit of pressure in the water system when i open the cap. i suspect yours looks identical? the last thing after that (before checking the cylinder head) is the two temperature sensors on my top radiator hose. some cars have one, but that could be messed up as well. hope this helps

Mar 20, 2009 | 1998 Volkswagen Golf

1 Answer

What would cause my cylinder head to crack on my 4.3 2000 Envoy?


The cylinder head is a crucial part of all combustion engines, and cylinder head cracking can result in catastrophic damage to the engine. In some cases, cylinder head cracking may result in such severe injury to the engine that it must be replaced. As a result, most motorists try to prevent cylinder head cracking, as an ounce of prevention in this case is worth many pounds of cure. The causes of cylinder head cracking are all relatively simple and easy to prevent, except in the case of mechanical parts failure through no fault of the operator. The cylinder head, used in combination with a head gasket, seals the cylinders of the car, along with other parts associated with them. The cylinder head is customized for the vehicle, and has very precisely milled surfaces to provide a smooth and flush fit with all connecting parts. In the case of a minor crack, the cylinders may lose compression and misfire. Major cracks can cause severe damage to the cylinders of the engine. For this reason, when replacing either the cylinder head or the head gasket, make sure that you are using the correct parts, including bolts, for the job. Even a brand new car can experience cylinder head cracking if parts have been installed incorrectly or if there are weaknesses in the metal. Especially in the case of a vehicle which is still under warranty, drivers should contest the cylinder head cracking with the dealer. Be certain to inspect any vehicle before you purchase to check for weak spots in the metal or incorrectly installed components. This includes the cylinder head gasket, because improper installation of this vital part can cause cylinder head cracking. Cylinder head cracking has become more common as car manufacturers use mixed metals in their engines. Many vehicles, for example, have a solid cast iron engine block but an aluminum cylinder head. These two metals expand at different rates, and this can lead to cylinder head cracking. The most common cause of cylinder head cracking is overheating. When a vehicle overheats, it puts stress on all of its metal components, including the cylinder head, which is often at the center of the heat. This can cause the head gasket to fail, which may lead to cylinder head cracking as the components warp and pressure begins to leak. All drivers should properly maintain their vehicles to prevent overheating. Many drivers mistakenly pour cool water into the radiator when their vehicles overheat, in an attempt to bring the temperature down. This is not a good idea, because the rapid temperature change will cause cylinder head cracking due to thermal stress. In a case where the cylinder head survives overheating, the driver may inadvertently destroy it by trying to do good. To prevent overheating, make sure that your radiator is filled and in good condition, with a tightly sealed cap. Check to be certain that your engine thermostat is in good working order, and accurately reflecting the temperature. Make sure that you have no leaky belts or stretched hoses, and that the fan is working effectively. If your car does overheat, stop, turn off the engine, and allow it to cool completely before adding water. Cylinder head cracking can also be caused by localized hot spots in the engine, which usually represent a failure in some portion of the cooling system. Always make sure that hot spots are addressed, particularly if your head gasket has failed and required replacement recently. Hot spots are often caused by uneven expansion of engine parts, leaky hoses, and pre-ignition in the cylinders of the engine. If your car has overheated, check the cylinder head and gasket for signs of cracking or warping. If the cylinder head has warped even slightly out a flush state, it will cause cylinder head cracking. In this case, the head gasket may need to be replaced and the cylinder head should be ground even again before it cracks. Thanks for using FiXya - a FiXya rating is appreciated!

Jan 21, 2009 | 2000 GMC Envoy

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