Re: [FWDLK] 1957 Dodge Fuel Supply Problem -- Any Help With This Mystery?

["cpollock2@xxxxxxxxxxxx" <cpollock2@xxxxxxxxxxxx>]

My guess- without looking at it first hand- fuel is vaporizing in the fuel line between the pump and the carburetor.

This is called vapor lock.  Most of the time it is cause when a fuel line is too close to a hot exhaust manifold, or if a heat shield that once covered a line has fallen off.

As an added bonus, modern fuels contain ethanol, which makes them vaporize even quicker.

The only remedy I can advise is to shield the line.  There are several manufactures of insulating material just for this purpose.  Check Jegs or Summit.  They’ll have something.

The other remedy is to install a small electric fuel pump somewhere near the fuel tank.  They make small pumps for this purpose. Again, Jegs or Summit can help.

Though it won’t be factory, it will fix the problem.

Good luck. 

Beautiful car you have there!

Charles.

On Apr 30, 2017, at 10:59 PM, John Williams <jwilliams@xxxxxxxxxxxxxxx> wrote:

My mechanic and I are having trouble diagnosing this problem with my 1957 Dodge Custom Royal with the 325 wedge V8 engine:

 

After running for a while on warm days, the car starts acting like it’s starved for fuel and often stalls out.  This happens only when driving up a road incline of more than a couple of degrees.  Normally I’ve been able to restart it right away, but yesterday, every time I restarted the engine, it would run for a couple of seconds and shut down again.  

 

I’ve reported this issue to my mechanic since it started about a year ago, but he’s been unable to find anything wrong.  Yesterday I had to have the car towed, but when it arrived at my mechanic’s place, he started it right up and drove it into the garage and it ran fine.  Again, he can find nothing wrong – no clogged lines, and the fuel pump is pushing out plenty of fuel.

 

Again, I’ve observed the problem only on hot days (yesterday was 81 degrees), only after driving for at least half an hour or so, and only while driving up an incline.  I’ve owned the car for 20 years and this is issue appeared only in the last year or so.

 

Anyone seen this themselves, or know what the trouble is?  

 

Thanks for your help!

 

John Williams

1957 Dodge Custom Royal

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