Question about 2000 Mazda MPV

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Cracked cylinder head - 2000 Mazda MPV

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  • yadayada
    yadayada May 11, 2010

    replace it??

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  • 1,586 Answers

No repairing that - you'll have to have it replaced.

Posted on Nov 19, 2009

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What's your question?does a crack from the cylinder head causes crankcase pressure


very unlikely
a cracked cylinder head normally presents as over heating, valve seat insert noise or poor performance
increase crank case pressure is from worn engine , cracked/ broken ring/s piston failure , cracked piston, scored cylinder bore/s

Jul 21, 2016 | Cars & Trucks

2 Answers

Water in the oil


Radiator coolant in the engine oil is normally an indication of a failed cylinder head gasket or a crack in the cylinder head or both.

Running the engine in an overheated condition will cause head gasket failure and often a crack in the cylinder head.

The problem you have is coolant is escaping into the engine's lubrication passages via the failed head gasket or head crack and contaminating the engine oil. If not fixed you will cause further damage to the engine as oil contaminated with radiator coolant cannot adequately lubricate the engine.

Running a leak down test on each cylinder will confirm the leak. In this case you are going to need to have the cylinder head removed and thoroughly checked for cracks and any warpage as well as a new cylinder head gasket fitted. The condition the engine block surface will also need to be checked.

Jun 14, 2016 | Cars & Trucks

2 Answers

Engine is a 2.7. coolant in oil.


Best hope is yes blown gasket worst cracked head or cylinder liner

Dec 09, 2015 | 2001 Dodge Stratus

1 Answer

Its a 2000 cadillac deville the oil motor goes to the radiator what can I do


Engine oil going to radiator is a cylinder head problem.
Either
1. Cylinder head gasket burnt
2. Cylinder head bolts not tight enough
3. Cylinder head cracked
4 Cylinder head warped.

Remove cyliner head and pressure test it for cracks. If cracked replace unless someone near you can repair effectively. If not then skim and you might as well do a complete cylinder head service ie valves, stem seals etc. Put back head with new gasket and torque correctly and be surprised with the results.

Sep 13, 2012 | Cars & Trucks

1 Answer

Clunking noise when I hit bumps fuel low it stalls oil in anti-freeze


You probably have a cracked cylinder head. Has the car overheated or been run really low on
oil?

Could also be a blown head gasket. But the clunking sound when you hit bumps makes me
think the one of the cylinder heads is cracked.

But oil in the antifreeze is a sign of:

1) Cracked cylinder head.
2) Cracked engine block
3) Blown head gasket.

I think its a cylinder head because its a lot easier to crack a cylinder head than an engine
block.

Aug 07, 2011 | 1991 Cadillac DeVille

1 Answer

Engine overheating 2004 kia rio changed thermostat, lots of antifreeze, still overheating


Then the problem is the water pump or a cracked Head, blown head gasket or cracked cylinder wall causing over pressure in the cooling system. Replace the water pump first then consider the other problems. If you do a compression check and have compression on all cylinders but extremely high compression on 1 or 2 then the problem is the Head gasket, head or Cylinder wall being cracked.

Feb 24, 2011 | Kia Rio Cars & Trucks

1 Answer

Coolant keeps getting low but there are no leaks and it never runs hot


Hello and welcome. I suspect cracked cylinder heads. this engine is very well know for heads cracking. what you need to to inspect for cracked heads. pull off both valve covers and inspect the cylinder heads using these instructions.

Some vehicles may experience a gradual coolant loss over time. A very low percentage of cylinder head(s) manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.
Inspect the cylinder head assembly to determine if the casting was manufactured by Castech. This can be accomplished by inspecting for their casting logo located on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.

If the cylinder head(s) is a Castech casting (1), inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time (2).


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Sep 12, 2010 | 2002 Chevrolet Silverado 1500

2 Answers

Not sure if i blew the head gasket or cracked the heads themselve, is there a way to know


Most of the time the heads will have to come off to see what has actually happened.

Jun 06, 2010 | 1997 Cadillac DeVille

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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