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What makes it vapor lock - Ram 1500 Dodge Cars & Trucks

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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.

Posted on Mar 31, 2015

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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

Vapor locking


What make , model an year vehicle ?Engine size too. Vapor lock is something that was associated with carburetors not fuel injection ! Do you have a check engine light lit on the dash ? How long must it sit before it starts ? Are the cooling fans working ? Sometimes they keep running after engine shuts off , depending on engine temp.

Mar 21, 2015 | 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

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

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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

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Vapor lock only when hot outside.


I understand what you are describing, but keep in mind it is almost impossible to have an actual vapor lock on a fuel injected vehicle.
Vapor lock is when the gasoline in the fuel line turns to vapor before it gets to the engine.
I am assuming your Ford is newer than 1982 and has fuel injectors.
In your case it could be a vac leak or something making the fuel mixture too lean. A problem with the EGR valve or other component could cause the issue.
Is the check engine light on ?

Oct 02, 2012 | Ford Focus Cars & Trucks

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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Vapor lock


Hi, replace gas cap.....

Jul 09, 2008 | 1992 Cadillac DeVille

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