Vapor lock meaning

Vapor lock is a problem that occurs when vapor forms in the fuel system and interrupts the flow of fuel to the engine.


Vapor lock definitions

Word backwards ropav kcol
Part of speech Noun
Syllabic division va-por lock
Plural The plural of the word vapor lock is vapor locks.
Total letters 9
Vogais (2) a,o
Consonants (6) v,p,r,l,c,k

The term vapor lock refers to a problem that can occur in internal combustion engines, especially in older vehicles or those with carburetors. It happens when the fuel in the fuel line or carburetor turns into vapor rather than remaining in liquid form. This vaporization can disrupt the flow of fuel to the engine, causing stalling or preventing the vehicle from starting.

Causes of Vapor Lock

Vapor lock usually occurs when the engine compartment becomes too hot. This can happen on particularly hot days or when the engine is working hard and generating a lot of heat. The high temperatures cause the fuel to boil and turn into vapor, creating air pockets in the fuel line that prevent the proper flow of fuel to the engine.

Symptoms of Vapor Lock

One of the main symptoms of vapor lock is when the engine stalls and refuses to start again, especially when hot. The vehicle may run fine when it is first started but then stall once it warms up. This can be frustrating and dangerous, especially if it happens while driving.

Preventing Vapor Lock

To prevent vapor lock, especially in older vehicles or those prone to the issue, there are a few measures you can take. Keeping the engine well-maintained and in good working order can help minimize the risk of vapor lock. Ensuring proper airflow in the engine compartment and reducing heat buildup can also help prevent this issue. Additionally, using fuel additives that lower the boiling point of the fuel can be beneficial.

Regular maintenance and awareness of the symptoms of vapor lock can help you address the issue before it becomes a more serious problem. If you suspect vapor lock is occurring in your vehicle, it is essential to address it promptly to avoid potential damage to the engine or safety risks while driving.


Vapor lock Examples

  1. The engine stalled due to vapor lock on the hot summer day.
  2. He had to wait for the fuel lines to cool down to prevent vapor lock from occurring.
  3. The mechanic explained how vapor lock can disrupt the flow of fuel in a car engine.
  4. High temperatures can increase the chances of vapor lock happening in a vehicle.
  5. Adding insulation to the fuel lines can help prevent vapor lock during extreme heat.
  6. A vapor lock issue caused the car to lose power while driving uphill.
  7. After fixing the vapor lock problem, the car ran smoothly again.
  8. The driver experienced difficulty starting the engine, which was later diagnosed as vapor lock.
  9. Regular maintenance can help reduce the risk of vapor lock in older vehicles.
  10. The driver had to let the engine cool off after experiencing vapor lock on a long road trip.


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  • Updated 28/03/2024 - 15:45:52