Free Republic
Browse · Search
General/Chat
Topics · Post Article

To: Dave in Eugene of all places
Forget about vapor lock. It's an impossibility on that particular car.

Just curious, but why is vapor lock an impossibility on that car?

27 posted on 07/29/2003 5:30:32 AM PDT by mbynack
[ Post Reply | Private Reply | To 25 | View Replies ]


To: mbynack
>> Just curious, but why is vapor lock an impossibility on that car?

Vapor lock occurs when a fuel pump on the engine "pulls" fuel from the tank, and the low pressure in the line at the suction side of the pump, usually combined with heat, allows the fuel to "boil" inside of the line, turning it into a vapor. Because of the design of the early camshaft driven diaphragm style pumps, they don't push vapor through themselves as well as they do liquid, so when the bubble of vapor hits the pump it stops working.

This car almost certainly has a submerged fuel pump inside the tank, which maintains a positive pressure in the lines at all times, so one of the two conditions necessary to create a vapor lock never exists.

Dave in Eugene
29 posted on 07/29/2003 8:42:09 PM PDT by Clinging Bitterly (Keep forgetting to update this thing from thread-specific taglines. Am I the only one?)
[ Post Reply | Private Reply | To 27 | View Replies ]

Free Republic
Browse · Search
General/Chat
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson