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Daniel,
 
Although it is difficult to tell what is happening by your description, I think I have a solution, or at least a place to start looking for a real answer.
 
I think your problem may be [http://en.wikipedia.org/wiki/Vapor_lock|vapor lock]. This occurs in aircraft more often because of altitude changes. If the temp gauge reaches half (on the gauge) that would indicate a normal operating temperature for most vehicles. A quick glance oflook at the instrument cluster will show most needles in the straight up position. This is by design so that when you see one needle pointing one way or another, you know there is an abnormal situation inwith just a second.glance.
I think your problem may be [http://en.wikipedia.org/wiki/Vapor_lock|vapor lock]. This occurs in aircraft more often because of altitude changes. If the temp gauge reaches half (on the gauge) that would indicate a normal operating temperature for most vehicles. A quick glance oflook at the instrument cluster will show most needles in the straight up position. This is by design so that when you see one needle pointing one way or another, you know there is an abnormal situation inwith just a second.glance.
 
If you are operating at the normal temperature, this may mean that one of your fuel lines, or fuel rails is being heated abnormally in the engine compartment. Perhaps a fuel line bracket is missing or broken causing a line to lay on a hot engine component such as the exhaust manifold or an oil line or a header or the engine block. You might also try wrapping your fuel lines in a heat reflective tape. Another suggestion is to fashion a heat shield under the carburetor.
 
However, you may have a different fuel delivery problem, such as debrisdebris in the tank, restriction in the fuel line,line or fuel filter, tank or tank pickup.
However, you may have a different fuel delivery problem, such as debrisdebris in the tank, restriction in the fuel line,line or fuel filter, tank or tank pickup.
 
Here is an [http://bobhooversblog.blogspot.com/2008/04/av-vapor-lock.html|interesting article] about vapor lock and it's prevention.
 
One more article on [http://www.carolinarovers.info/croc-stuff/tips/365-how-to-cure-fuel-line-vapor-lock|prevention.]
 
I would be interested to know if any of this works.
 
Frank

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オリジナル投稿者: 040304 ,

テキスト:

Daniel,

Although it is difficult to tell what is happening by your description, I think I have a solution, or at least a place to start looking for a real answer.

I think your problem may be [http://en.wikipedia.org/wiki/Vapor_lock|vapor lock].  This occurs in aircraft more often because of altitude changes.  If the temp gauge reaches half (on the gauge) that would indicate a normal operating temperature for most vehicles.  A quick glance of the instrument cluster will show most needles in the straight up position.  This is by design so that when you see one needle pointing one way or another, you know there is an abnormal situation in just a second.

If you are operating at the normal temperature, this may mean that one of your fuel lines, or fuel rails is being heated abnormally in the engine compartment.  Perhaps a fuel line bracket is missing or broken causing a line to lay on a hot engine component such as the exhaust manifold or an oil line or a header or the engine block.  You might also try wrapping your fuel lines in a heat reflective tape.  Another suggestion is to fashion a heat shield under the carburetor.

However, you may have a different fuel delivery problem, such as debris, restriction in the fuel line, fuel filter, tank or pickup.

Here is an [http://bobhooversblog.blogspot.com/2008/04/av-vapor-lock.html|interesting article] about vapor lock and it's prevention.

One more article on [http://www.carolinarovers.info/croc-stuff/tips/365-how-to-cure-fuel-line-vapor-lock|prevention.]

I would be interested to know if any of this works.

Frank

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open