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Anonymous
Anonymous Posted on Oct 11, 2009
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I have a 87 mustang and it has a mr gasket electric fuel pump. It vapor locks all the time. i have to take fuel line off turn switch on let fuel pick back up then plug the fuel line back up and it will unlock. i was wondering if you have any solutions. thanks

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Lee Seliga

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  • Posted on Oct 11, 2009
Lee Seliga
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Actually vapor lock refers to a condition in the intake manifold on a carbureted engine. You don't have vapor lock. What you may have is a filter inside the tank, its nicknamed a sock. Its a fine mesh screen and may be plugging up. When you pull the fuel line the fuel flows back and unblocks a small section , until it starts too **** again and re plugs. You may also have fuel pump that starts to lose power when its gets hot. Lee

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john h

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  • Ford Master 29,494 Answers
  • Posted on Oct 11, 2009
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Doesnt sound like a vapor lock more like a leak not holding pressure in line put on gauge and check pressure from pump may also be low

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  • Posted on Oct 11, 2009
Anonymous
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87 Fuel injected? pump is in the tank right? good filter?ck fuel pressure, should be 35-45 psi. check pressure while you are having the problem. Vapor lock with a fuel injected car is VERY RARE.

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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.

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Apr 05, 2013 • 1998 Ford Escort
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Same as the last TWO times you asked this question:

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Removal & Installation To Remove:
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  2. Drain the fuel tank through the filler pipe.
  3. Support the fuel tank.
  4. Remove or disconnect the following:
    • Negative battery cable
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View of the in-tank fuel pump assembly. 7924jg21.gif

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I am getting no diesel into my fuel filter is their a electric pump in my tank or is the fuel pump part of the injector pump
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prev.gif next.gif
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Aug 17, 2010 • 1995 Mazda MPV
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My 1969 mustang is vapor locking. what can i do to fix it
I have never herd of a vaper lock on a 69 mustang. Try to change your fuel pump or in line filter hope this helps CJ
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May 25, 2010 • 1989 GMC Suburban
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I'd go back to the factory fuel pump, check the fuel cap too.
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  1. Properly relieve the fuel system pressure.
  2. Drain the fuel tank through the filler pipe.
  3. Support the fuel tank.
  4. Remove or disconnect the following:
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    • Filler neck
    • Shield and tank straps
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    • Electrical connection from fuel pump
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To Install:
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    • Shield
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1e2538e.gif
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