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Vapor Lock up-date

  • dougklink
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29 Aug 2008 02:29 #11164 by dougklink
Replied by dougklink on topic Vapor Lock
For those truly stubborn cases, run a second fuel line back to the tank from the carb as a return line. Put a tee at the carb with an orifice in the return line connection to be sure you keep enough fuel pressure at the carb. Used with an electric pump, this setup provides cool fuel to the carb at all times. I've not tried this on my 812, but have seen it used on other cars with success.

Not sure if the second line would be a points deduction in judging, although it looks better than clothes pins. :)

Doug Klink
Estes Park, Colorado

812 S/C Phaeton

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  • Hal Klassen
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28 Aug 2008 18:08 #11162 by Hal Klassen
Replied by Hal Klassen on topic vapor lock
Way back there were aluminum clothes pegs. They would carry away a lot of heat. Somehow, over the years, this got remembered as wooden clothes pegs. With the low boiling point of modern gas, everyone can have problems---not just Cords.
Hal Klassen

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  • Tom_Parkinson
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28 Aug 2008 03:12 #11160 by Tom_Parkinson
Replied by Tom_Parkinson on topic Vapor Lock up-date
An old farmer's and poor man's insulation system for a fuel line was (and is) to clip on a batch of spring-loaded wooden clothes pins all close together for the length of the fuel line under the hood. The wood insulates the line.

Looks like heck, but you'll always be prepared to seal up that occasional bag of left over potato chips... <!-- s:wink: --><img src="{SMILIES_PATH}/icon_wink.gif" alt=":wink:" title="Wink" /><!-- s:wink: -->

--Tom

With brakes, two cylinders are better than one.

Editor-in-Chief Emeritus, The Hardtop News Magazine, the Journal of the Michiana Dunes Region, Lambda Car Club International

See pix of 1509A here: mbcurl.me/YCSE

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  • Tom Georgeson
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27 Aug 2008 01:06 #11155 by Tom Georgeson
Replied by Tom Georgeson on topic vapor lock
Dennis,

You should insulate your fuel line with insulation that is available from a hot rod shop. Check on line, that is how I got mine. It slides over the gas line and is silver in color. I did mine from the tank to the carb. A good part store should be able to get it.
If your battery ground wire isn't connected to a bolt on the starter you shoud do so. Also, make your battery lines out of 00 welding wire, it will make a difference.

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  • Dennis Jolicoeur
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25 Aug 2008 23:46 #11151 by Dennis Jolicoeur
Vapor Lock up-date was created by Dennis Jolicoeur
Hi everyone,
Thanks so much for replying to my vapor lock problem. A few notes, I do have a electric fuel pump in line, back at the gas tank with a filter before it. The instructions that came with the car tells me to turn on the electric pump when I start the car and then turn it off after it starts. I do not know if it is a rotary pump or not. The mechanical pump has been rebuilt and it is mounted on top of the engine. I also have a new correct coil, new plugs and wires. I have noticed the fuel percolating in the glass fuel bowl. I also have a new battery but I do notice that it seem to crank slower when hot. Has anyone made a metal shield to mount under the fuel pump. I own a few Studebakers and the early V8's had the fuel pump mounted on top of the engine and these V8 were prone to vapor lock also. A metal shield was designed to mount under the fuel pump and this solved the problem.
I still love driving the Cord and hope to put many miles of enjoyment on it!

Dennis Jolicoeur

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