Car doesn’t start after head gasket replacement

After we replaced the head gasket on my car, I couldn't start it up anymore. We made sure that all the parts were put back in the right place. We put the battery and tried to turn the engine on, but it wouldn't start. What should I do? Thanks.
Experienced mechanics share their insights in answering this question :
Hi there. If the engine will not crank then the starter circuit needs to be tested to see if there is a wiring issue. If it is cranking and not starting then the computer needs to be checked with a scan tool to see if it is getting a crank signal from the crank sensor. If not then it may be a sensor or circuit problem. If all of the sensors check out the security system may be causing this. If the security light is on when you try to crank the engine then it is the issue. This can be a programming issue or a problem with the passlock sensor. A computer scan tool would be needed to test those. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to inspect your vehicle.

How to Identify and Fix Common car Problems ?

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If the engine will not crank then the starter circuit needs to be tested to see if there is a wiring issue. If it is cranking and not starting then the computer needs to be checked with a scan tool to see if it is getting a crank signal from the crank sensor. If not then it may be a sensor or circuit problem.
It`s important to check components like the radiator and the water pump, as well as the coolant itself (which may have become contaminated). A problem with one of these could lead to an overheating engine, even after a head gasket replacement.
I know folks who used it and they are driving there cars for years.. so you have to weigh the risks and the worth of the vehicle. But no, cannot put it in if it won`t start.
When your engine isn`t starting because of a bad head gasket, you`re going to notice certain symptoms: The engine turns over but doesn`t start. Each time the engine rotates, the battery dies more. Even when the starter catches, the engine will not ignite.
Many mechanics believe that 4 hours of cure time is sufficient to return a vehicle back to service when using silicone gasketing products. There are gasketing formulas that allow an immediate return to service, such as Permatex The Right Stuff®. However, most gasketing products require 24 hours of cure time.
A failed head gasket means the engine will have to work harder to create power. Furthermore, a blown head gasket can cause your vehicle to lose coolant, causing the engine cooling system to underperform, making the overheating situation even worse.
When the head gasket fails, these channels are no longer sealed, which can result in coolant leaks, oil leaks or gases escaping from the combustion chamber. A blown head gasket happens when the engine overheats, causing an increase in thermal pressure which puts immense strain on the gasket.
But there`s a more urgent issue to be aware of if you`re driving with a blown head gasket: if the coolant is leaking, then it`s no longer available to cool down the engine. Without this support, the engine will soon overheat if you keep driving – leading to further cracking and damage to your engine.
There should be no need for a gasket on the starter as there is no fluid that contacts this area of the engine.
Engine knocking or stalling starts when valve cover gaskets fail to separate the valve cover and cylinder head. As a result, the engine takes some time to start due to fuel loss.
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.
Depending on how severe the leak or perforation is, a car usually does not last longer than a month with a blown head gasket.
Additionally, the blown head gasket may have caused further problems in other engine parts or caused irreversible damage to the engine. If the blown head gasket has caused catastrophic damage, a complete engine may need to be installed or a new vehicle purchased.
Driving with a blown head gasket can cause further damage to the engine and may result in total engine failure, which can be expensive to repair or replace. If you suspect your vehicle has a blown head gasket, it`s crucial to address the issue as soon as possible.
You may even hear a knocking sound emanating from the engine, or the sound of a misfire, depending on how the head gasket blew. The sound of a misfire could be related to an overheating engine, coolant leak, or lowered compression as a result of rough idling.
Most blown head gaskets can be properly fixed without a mechanic. There is a point where the damage is too great and you will need the expertise of a professional to replace the gasket, but many leaks in a head gasket can be taken care of with one of our products.
Sometimes when oil leaks from a valve cover gasket it leaks all the way down to the spark plug well and eventually seeps inside the spark plug tubes. This will cause a misfire or reduce engine performance. It can also cause a fire under your hood if it goes unrepaired.
Most blown head gaskets can be properly fixed without a mechanic. There is a point where the damage is too great and you will need the expertise of a professional to replace the gasket, but many leaks in a head gasket can be taken care of with one of our products.

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My car will not start Intermittently. I purchased a new battery 2 weeks ago and yesterday the car wouldn’t start. Got a jump and
ANSWER : The issue you are having is probably due to an intermittent fault in the starter motor itself or a deficiency in the starter electrical circuit, for example a large voltage drop due to a poor ground or a high resistance connection. These issues can be readily diagnosed and resolved on a mobile basis if you request a hard starting diagnostic. If you request that diagnostic, the responding certified mechanic will get this resolved for you promptly. Based on Toyota’s Factory Service Manual, the battery should not be disconnected if the vehicle engine is running. The battery acts as a large resistive voltage sink and consequently taking the battery out of the circuit, while the alternator is still running, can create a voltage spike on the car’s electrical system which is not good for voltage sensitive components such as the engine computer. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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.

My car stutter starts, but only after driving it for a few minutes.
ANSWER : Hey there. This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire, or stall. If you would like to have an expert pinpoint the issue, a certified professional from YourMechanic can come to your car’s location to inspect the hard start problem and confirm which repairs are 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.

My car stutters after driving it for a few minutes – 2002 Toyota
ANSWER : This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire or stall. I would recommend having an expert from YourMechanic come to your location to diagnose your fuel pressure.

When I start my car it doesn’t start after the jump start it started but later it didn’t and the battery was last replaced on 9/2012
ANSWER : As you may know when jump starting the car, the battery power provided is being supplied form the other car you are using to jump your car with. If the car does not start following the jump, this would suggest your battery may be dead and needs to be replaced. If the battery was last replaced in 9/2012, it is most likely time for a new battery as that is a decent amount of life for a battery.

Replaced alternator and all was well. One day went to start the car and it made weird noise then shuttered and died. The belt doesn’t seem lose.
ANSWER : Check the drive belt and see if it has a glaze to it. If so, then the drive belt is stretched and needs replaced. A drive belt has a life span of about 25K miles. Having 40K miles on the drive belt will have it stretched and weather cracked. If you need further assistance with your noise on the engine, then seek out a professional, such as one from Your Mechanic, to help you.

I have a 1992 Honda Accord EX and I’m having an issue with the car not having power to the dash at all and doesn’t start.
ANSWER : Hi there:

The symptoms you’re describing are often an indicator that a problem exists with the alternator or charging system such as an electrical relay. Before you spend another penny trying to chase the symptoms by purchasing more parts, it’s best to have a professional mobile mechanic complete a battery does not hold a charge inspection. This service will allow them to correctly diagnose your Honda Accords issues.