How do you troubleshoot vapor lock?
How Do I Repair a Vapor Lock?
- Pour cold water over the fuel pump and fuel lines while the ignition is in the off position.
- Turn the key in the ignition to start the vehicle while at the same time slightly depressing the accelerator.
- Hold the accelerator down when the vehicle starts until the engine is running smoothly.
When does vapor lock occur in a car?
Vapor lock occurs when fuel overheats and vaporizes in a fuel line or carburetor, preventing proper fuel flow. Although common in older vehicle models, it wasn’t until the appearance of the modern fuel injection system that vapor lock became more prevalent in carbureted engines.
When does a vapor lock occur in a suction pump?
Vapor Lock. A condition that sometimes occurs during hot-weather months in suction pumping systems, and which interferes with the flow of gasoline through the system.
Is there a way to avoid a vapor lock?
Vapor lock can be avoided by burying the piping at a proper depth or by cooling the piping so that the gasoline that has vaporized will revert to liquid form.
What causes a fuel pump to vapor lock?
There are several symptoms that may point to vapor lock. Lose of fuel delivery system pressure or flow (volume) (this may be caused by a restricted fuel filter or insufficient voltage to the fuel pump) Faulty check valve in an electric fuel pump assembly
What does vapor lock do to an engine?
Vapor lock happens when your fuel boils in your carburetor or your fuel line. Vaporized fuel creates back pressure in your fuel system and prevents gas from getting to your engine.
What to do if you have a vapor locking problem?
Before looking at the customer’s problem as a vapor locking condition, make sure something else is not causing the running problem. Air leak in the engine or boat fuel system. Check the tightness of all fuel fittings and clamps. Check for a cracked housing where a brass fuel fitting is threaded in it.
There are several symptoms that may point to vapor lock. Lose of fuel delivery system pressure or flow (volume) (this may be caused by a restricted fuel filter or insufficient voltage to the fuel pump) Faulty check valve in an electric fuel pump assembly
When to know if your car is vapor locked?
If the engine seems to catch while spraying the starting fluid, there’s a good chance the fuel delivery system is vapor locked. You can do a similar test using a small plastic bag with ice: After your warmed engine stalls, pull to the side of the road.