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What is vapor lock? - Caravan Dodge Cars & Trucks

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Basically boiled gas... caused by gas line passing next to a manifold ( exhaust system) or hot surface and airlock the line..

Posted on Jul 02, 2015

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Vapor lock is when the fuel gets hot enough that vapor pressure exceeds the fuel line pressure and the fuel vaporizes. The fuel pump doesn't pump vapor very well and therefor liquid fuel doesn't reach the carburetor or remain liquid in the fuel bowls. Car won't start due to extremely lean conditions.

Posted on Jul 02, 2015

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Vapor lock is when a fluid in a closed system, such as in a hydrolic system, gets get hot enough to boil and produce vapor which unlike a fluid can be cimpressed thus rendering hydrolic systems inoperative. Fluids act as a solid when pressure is exerted on to them but in their gaseous state (vapor) they can be compressed and the pressure needed to move pistons is instead absorbed by the gas rather than applied to the pistons.

Posted on Feb 27, 2013

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I need to know where to find the fuel rail on my 2005 Hyundai


doubtful that vapor lock is an issue on a fuel injected car. it was something that happened on old vehicles, and you just don't hear about it any more. It doesn't happen because of the high fuel pressure in the fuel lines of fuel injected vehicles. If the vehicle is cranking and won't start, it might be a fuel issue--getting no fuel because of a fuel pump issue. But not vapor lock.

Aug 16, 2018 | Hyundai Cars & Trucks

1 Answer

Having trouble with vapor locking


Vapor lock can be caused by many different things, all coming down to the same root cause: too much heat in the fuel feed lines.

Low fuel pressure can cause the amount of heat needed to vapor lock to be lower than normal, so checking fuel pressure is important. Fuel pump going out feels a lot like vapor lock.

Engine overheat can also cause vapor lock. Clogged fuel filter can cause vapor lock. The fuel line should be routed away from the exhaust system.

Feb 29, 2016 | Cars & Trucks

1 Answer

What makes it vapor lock


If it is a gas engine, its almost impossible to get vapor lock.
Vapor lock is when liquid gasoline turns to a vapor which will not flow thru a carburetor. The usual cause was hot fuel lines going to the carb.
Since the early 1980s engines have used fuel injection which uses liquid fuel under pressure.

Mar 30, 2015 | Dodge Ram 1500 Cars & Trucks

1 Answer

Where do find the vapor lock on my 1999 Buick century


Vapor lock occurs when the gas in a fuel line turns from liquid to vapor, before it reaches the engine. The first signs of vapor lock are normally when your engine begins to run roughly. The engine may sputter and hesitate. It will then stall completely and refuse to restart. It may seem like the car is out of gas or the fuel pump has failed. While these are possibilities, vapor lock may be the problem.

Jan 30, 2015 | Buick Cars & Trucks

1 Answer

What causes 1995 isuzu vapor lock problems?


Fuel injected engines cannot get vapor lock. First you need to explain how you came to the conclusion if vapor lock. But this is an old post and probably will stay dead.

May 20, 2014 | 1995 Isuzu Pickup

1 Answer

I put gas in my 1998 Camry, drove about one block and it stopped. It tries to start when but will not turn over. It's not the battery, energy still on in vehicle, not the starter, no clicking, not the...


Vapor lock, from my experience, is a pretty rare problem. Unless you have put too much starting fluid in through the air intake. If you have not tried to use starting fluid, you should try to spray some through the airfilter, or the air intake for the motor, while someone is trying to crank it. Do not over-saturate it, or it will cause vapor lock. (vapor lock is all fuel vapors and no air). I have a suspicion that a few squirts of this will get it to fire up. If it starts but then goes out after the starting fluid is burned up, then you may have a problem with the fuel not getting to the engine.

Aug 10, 2013 | Toyota Cars & Trucks

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Can vapor lock in the cooling system cause the engine to not spark and through off the camshaft sensor on a scanner in a 2001 dodge dakota sport 4.7 L v8 magnum manual transmission


No.
To begin with, there is no such thing as vapor lock in the cooling system. Vapor lock is when liquid gasoline vaporizes due to excessive heat. If the engine got hot enough to turn coolant into vapor the engine would seize up.
Do you have trouble code numbers ?

Jul 29, 2013 | Cars & Trucks

1 Answer

So tell me does a vapour lock ,comes from a hole in the muffler,and would that make a cranking sound come from your engine


To promote easy starting, all gasolines contain volatile constituents that under some conditions, such as high ambient temperature, tend to produce more vapor than the fuel-system vents can handle. The action of an engine-mounted fuel pump, in decreasing the pressure at its inlet, tends to vaporize the fuel. If the vapor forms faster than the pump can draw it from the fuel line, the flow of fuel to a carburetor is effectively stopped and the engine stalls. Vapor lock is much less likely on a fuel-injected engine with an electric pump in the fuel tank. However, an engine with port fuel injection may experience vapor lock if the injector or fuel overheats, or if the Reid vapor pressure of the fuel is too high.

Read more: http://www.answers.com/topic/vapor-lock-1#ixzz2Pf13O7aL

Apr 05, 2013 | 1998 Ford Escort

2 Answers

Is it vapor locking or not? All else shows okay.


vapor lock just doesn't happen on newer cars that are fuel injected like yours, it was carburetor equipped cars that vapor locked

Jun 25, 2009 | 1989 Oldsmobile Cutlass Cruiser

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