my brother Ran it hot till it shut off 3 times…it doesn’t appear to have blown a head gasket it blow a hose under and wont crank

the car overheated to it shut off 3 timesit does not appear to have a blown head gasket it blew a hose underneath for the heater but now the car will not start barely almost start could it possibly be one of the crank or Cam sensors or any other one
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello there. If you had a coolant hose break and it was replaced, fresh coolant added to the radiator and cooling system and there are no current leaks, there are several reasons why your Infinity may not be starting. First, when coolant leaks from a broken coolant hose, it tends to spray underneath the entire hood, causing issues with electrical components and sensors that impact the starting and operation of the engine. I would highly recommend having a professional mechanic come to your location to complete a car is hard to start inspection; so they can hopefully pinpoint the source of your issues.

How to Identify and Fix Common car Problems ?

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can cause head gasket failure but, conversely, a blown head gasket can also cause the engine to overheat. Hot exhaust gases can leak into the cooling system, or coolant can leak into the cylinders and be burned off as steam, either way, the end result is an overheating engine.
There is an easy way to find out if your engine`s head gasket has blown. Simply check under the oil filler cap. If the gasket is not damaged, the inside of the oil cap will be mostly dry. If you discover a milky brownish-yellow substance that is similar to the thickness of a milkshake, you probably have a gasket leak.
Head gasket failures are usually caused by repeated overheating, or continuing to drive after the car has overheated, so the best way to prevent a head gasket failure is to ensure your cooling system is in good condition.
After using a head gasket sealer, keep checking the car for leaks and other symptoms for about a day. It is easy to see if the sealants work, because you will notice immediately that overheating is no longer a problem.
Most engines will blow a head gasket when the coolant temperature has reached 260 degrees or more.
It is not recommended that you drive with a leaking valve cover gasket, as this can lead to overheating and engine insufficiency, as well as extensive engine damage.
Typically a car will last no longer than a month with a blown head gasket. This is the average and your engine`s life may differ depending on how bad the leak/perforation in the gasket is. The head gasket keeps the internal pressure that the engine holds.
A blown head gasket is a serious issue, as mechanical problems in the vehicle may have caused the problem and will need fixing. In addition, the head gasket problems may have caused engine failure or serious damage to the engine components, and that situation will need addressing.
Metallic and composite seals can withstand temperatures well above 1000°F. Elastomeric or rubber gaskets on the other hand have much lower operating temperature; an operating temperature above 350°F (177°C) is considered high temperature for polymers.
Faulty Thermostat

Once the engine reaches operating temperature, the valve will open and coolant will begin to flow through the engine. A faulty thermostat might remain closed even when the engine is hot, which can quickly lead to overheating.

A leaking valve cover is a prime issue in a gasket. The common signs of a leaked valve cover are filthy cover, oil burning smell, engine failure, engine knocking, and a lit check engine light. Sometimes you might also see white fumes from the engine.
Milky, frothy oil on the dipstick could mean you have coolant leaking into your oil pan, but doesn`t necessarily mean a bad head gasket. This symptom is too often mis-diagnosed as a bad head gasket with unneeded repairs performed. There are many other things that can also cause this and it is rarely a headgasket.
If your car can run safely for longer than 15 minutes without overheating, there are chemical repair products designed to seal the leak without the need to disassemble your engine. In fact, even those with hardly any mechanical knowledge can install the fix themselves.
Is K-Seal bad for your car? No. Scientifically tested, K‑Seal will not cause any harm to your car or its engine, nor will it damage the pump. It simply does what it says on the bottle: seals holes in your coolant system and cracks in your head gasket with ease, without the risk of blockages.
There is really only one true fix to a leaking head gasket, which is to replace it. Replacing a blown head gasket is typically not a DIY job. It will require disassembling the engine or removing it from some vehicles. An alternative temporary fix many try is a liquid head gasket fix.
Permatex®s The Right Stuff 1 Minute Series offers the fastest return to service in just 1 minute! This leak-proof, elastomeric °Formed-in-place” material is more reliable and longer lasting than pre-cut gaskets.
Head gaskets stop leaks in your engine, help to preserve its power, and aid in compression. But, like any other car part, head gaskets can fail, and spectacularly. For this reason, investing in a head gasket sealer is important.
Use when fruit plants are dormant and temperatures are above 40 degrees and before dormant oil spray. Excellent for reducing foliar disease due to fungus.
Average cylinder pressures are over 1,000 psi on high-performance engines and can be as high as 2,200 psi. Incidentally, detonation can raise that pressure to 3,500 psi and higher. Of course the higher the pressure, the more separation, and the head gasket is unloaded.
It gets even more concerning and confusing when car overheating suddenly returns to normal. This phenomenon can happen for many reasons, like a bad thermostat, a faulty radiator, or a coolant leak. As such, it`s best to get your car checked by a professional— like RepairSmith!
When idling, the engine relies on coolant water to cool it down. But a blown head gasket causes the coolant to flow into the engine block and get combusted. You`ll also notice that the coolant level drops and the engine overheats.
If the coolant leaks out too much, the computer will see this from the coolant temperature and coolant level sensors and shut off the engine to prevent any damage to the engine. Check for the coolant leaks and top off the coolant when the leak is fixed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

my brother Ran it hot till it shut off 3 times…it doesn’t appear to have blown a head gasket it blow a hose under and wont crank
ANSWER : Hello there. If you had a coolant hose break and it was replaced, fresh coolant added to the radiator and cooling system and there are no current leaks, there are several reasons why your Infinity may not be starting. First, when coolant leaks from a broken coolant hose, it tends to spray underneath the entire hood, causing issues with electrical components and sensors that impact the starting and operation of the engine. I would highly recommend having a professional mechanic come to your location to complete a car is hard to start inspection; so they can hopefully pinpoint the source of your issues.

i have a 1994 z28 and i did a head gasket replacement for some blown head gaskets. I then tried changing the timing gears and when
ANSWER : Hi there. It really depends on the location of the motor (meaning if it’s installed in the vehicle or loose and on an engine stand), that would factor into the price and whether this is a project one of our mobile mechanics can complete. We can complete the oil pan gasket replacement, but some of the other jobs like wiring harness, intake and rocker arm installation is outside of our scope of service. In regards to estimates for those services, I would suspect it would cost anywhere from $400 to $1,000 based on where it’s completed and what supplies would be needed.

Changed head gasket car won’t start.
ANSWER : Hi there:

In most cases when a cylinder head gasket has been pushed due to overheating, it can cause additional damage to valve train hardware; most of the time problems with valve guides. However, if you’ve double checked all hardware; you might want to look into the ignition system; perhaps the crankshaft position sensor is damaged (which happens most of the time during an overheating issue). If you can’t find the source of your issues, feel free to contact one of our local mobile mechanics and have them complete a car will not start inspection; so they can help you diagnose the problem.

Can bad intake manifold blow a head gasket? 2010 Toyota Prius
ANSWER : Hello – it is unlikely a bad intake manifold gasket will cause a blown head gasket on a Prius (different story for GM V6 engines). It is possible that a failing head gasket can cause a misfire over time – coolant can start to leak into the cylinders causing a misfire. The mileage level on your engine is within the range of reasonable head gasket failure. I would recommend an engine inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm the diagnose for this problem, give you an accurate assessment of damage and cost estimate for repairs.

Can a blown head gasket cause a map controlled thermostat not to open?
ANSWER : Hi there. Although a blown head gasket can cause multiple systems to fail throughout the vehicle, is less than likely that it would impact the operation of the thermostat on the radiator. However, it is quite possible that when the original overheating issue that likely caused the head gasket failure occurred, several electrical harnesses or sensors that control and monitor these components may have been damaged. Coolant can overflow for many reasons, but typically it’s due to having coolant that is not thinned down to the recommended 50/50 ratio of coolant to distilled water when adding coolant to the radiator.

My air is blowing cold-hot-cold-hot-cold-hot…
ANSWER : It is possible that you have a leak in the AC system. There are pressure switches that will turn off the compressor if the pressure is too high or too low. The low refrigerant level could cause the AC compressor to cycle on and off. If you would like to have this done, a certified technician from YourMechanic can come to your car’s location to diagnose the AC system and make the correct repair.

Honda Civic 2008 after replace blown head gasket car take long to start
ANSWER : If vehicle is hard to start after the engine head was removed then you may need to double check the timing of the timing belt was set correct and the engine has no codes for the cam sensor set because of it. You may have timing off one tooth. You should also check engine compression.

While driving defroster set to hot blows hot air as it should, while idling it is blowing cold air.
ANSWER : First, the coolant level should be checked to make sure the radiator is full. While the overflow tank may be full, the radiator cap must be taken off to check the level inside the radiator. If you find the level is very low, you have a coolant leak that must be fixed. If coolant levels are normal, an engine thermostat or heater control problem may be what you’re experiencing. Consider hiring an experienced technician like one from YourMechanic who can come out and take a closer look at your lack of heat concern to offer a more personal diagnosis.