So, on modern vehicles with all of the new microelectronics and micro circuitry, you have to consider if a component had an opportunity to overheat. They might heat up enough to cause trouble as you're going down the highway, or they might only overheat after the vehicle has been parked and there's no air flowing and cooling happening. So, on modern cars, something you always have to think about is whether the electronic components have heated up. If I had I stayed in the store probably 40 minutes, the module in the engine would have been cooling down and it would function well enough to start the car as it always did. The expansion caused on the electronic components affected their micro circuitry. Long story short: in this situation the heat from the engine basically heat soaked that module in the 15 or 20 minutes I was in the store. One day I drove 15 minutes up to the store, came out 20 minutes later and could not get the car to start to save my soul. I had an Oldsmobile and it developed a very tiny engine miss, but it drove fine most of the time, but don't mess with something if it's not broken. If you drive a car a short distance and you park it, the module or other electronic components get heat soaked and then they don't work if you come back out to the car in 15 or 20 minutes. Regarding ignition modules and other electronic components: many, many times as electronic components heat up, if they have a flaw or have grown old they will misbehave. Then after 30 minutes or so, I'll try to start it and it's fine until it's been running 30 minutes or longer and then it happens again.ĭoes it need a pressure regulator or a heat shield to protect the fuel line or does the carb needle value need to be changed or reset to keep the engine from flooding? Please answer as soon as possible.
#Vapor lock full
I opened the hood and the inline glass fuel filter might be empty or full of fuel, but the car has trouble starting when this happens.Īlso, after running and shutting off all by its self like it has no fuel. Sometimes the car runs for 30 minutes or so then starts to die, like a vapor lock or flooding the carb. It has a 350 small block carb engine and smells like it's getting too much fuel.
My hot rod Corvette has low gasket pressure in the electric fuel pump. I had a 1968 Roadrunner that I used to drive a lot in the summer when the temps got well into the 90's. The amount of fuel that is delivered to the engine can be changed using simple mechanical adjustments on the carburetor. A carburetor, on the other hand, is a mechanical device that uses the engine’s natural vacuum, allowing specific amounts of fuel to be sucked into the combustion chambers. Fuel injection is more advanced, and requires a computer to tell the injectors how much gasoline to squirt into the engine. Carburetors and electronic fuel injection are two different methods of delivering the proper amounts of fuel to the engine. Vapor locking primarily happens in cars with carbureted engines, but since electronic fuel injection replaced carburetors in the 1980s, most car owners don’t have to deal with this issue anymore.
This problem causes a car to stop running when the fuel lines overheat cars sitting on the side of the road with their hoods raised used to be a common sight, particularly on hot days. Owners of older cars can add newer low-pressure electric fuel pumps near their tanks to help prevent vapor lock.Īlthough vapor lock is not often seen in modern cars, it was a common problem with the carbureted cars of past decades.
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