RE: [Chrysler300] 300C vapour lock?

["JOHN MC ADAMS" <clafong@xxxx>]

Hi Gary:

Another thing to look into that I ran into years ago on the older cars like ours.  

If you have a flexible fuel line running from the frame mounted fuel line to the fuel pump.  These were typically covered with a braided steel mesh.  Sometimes the rubber hose inside will get a split in it and the fuel pump will suck air easier than it will suck the gas through the line.  The braided steel line will suck air before it will leak gas on the ground.  The braided steel on the outside of the line will also hide any splits from view.

Take the flex line off, block one end with your finger and blow into the other end to see if it will hold the air pressure from your lungs.  If it hisses or leaks, you have probably found your problem

Just a thought for you to look into.

Good luck,

John Mc Adams



-----Original Message-----
From: Gary Nelson [mailto:Gary@xxxxxxxxxxxx]
Sent: Saturday, September 14, 2002 10:46 PM
To: Oddvin Skråmestø; Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] 300C vapour lock?


Hi Oddvin

Two possibilities that have not been pointed out that could be your fuel 
starving problem. 30 years ago I battled the same problem on a car I owned 
at that time. It was the in tank fuel filter on the end of the fuel sending 
unit/ pickup. This is quit often over looked as it is out of sight out of 
mind. These filters are a fine Nylon mesh with age will easily clog and 
restrict fuel. Unless you have changed this I suspect this could be your 
problem. At least you would want to eliminate this possibility.
The other is the fuel filters at the carburetors. That is an easy test as 
you can remove the filter elements temporarily to see if that resolves your 
problem. I have stock of both items NOS if you cannot find at your end.

Gary, The Parts Doc


At 11:25 PM 9/13/2002 +0200, Oddvin Skråmestø wrote:
>Hi.
>This summer we have had the hotest summer ever here in Norway, several 
>days with temperatures over 82F. Driving my 300C in this temperature, the 
>engine stalls when idling, like stopping at traffic lights etc. After a 
>minor stop or driving at a slow section on the road, the car hesitates 
>when accelerating. It seems like a fuelpump failure, but only when hot. At 
>startup cold, and at continuous high speed driving the car acts normal. 
>When the car stops, it give me a hard time trying to make it run. I have 
>never had this kind of trouble before, and I have also driven the car at 
>high temperatures before too. Can a fuelpump start to fail when hot? Or is 
>the heat making a vapour lock at the pump. The pump is 12 years old, could 
>this be the first sign of wear?.
>I'm planning to install an electric fuelpump to assist the original, and 
>to help filling up the carbs after the winter rest.
>What brand and type should I buy? Anyone with experience on this?
>
>Thanks.
>
>Oddvin Skråmestø
>Norway.
>
>
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