Engine misfires with low fuel level

[libertylover]

On a previous thread someone complained that their car ran poorly with under 1/4 tank of gas. I saw an explanation for this about 6 months ago and was able to find it so I'm sharing it here:

The following information posted on www.roadfly.org by Greg Kissell.

“Generally it is a very bad thing to run an older car low on fuel. All sorts of crud gets sucked into the fuel system.

”So yes, running the car very low on fuel could have clogged your filter(s). Clogging the fuel pickup is worse than filter problems.

”Also, especially in cold weather, do not leave the tank even partially empty. Fill up just before going home. The tank will draw moisture overnight and cause starting problems even in brand new cars. This is a compound problem since there is no way to drain the water from automotive fuel systems.

”Each night you park with a partial tank you are adding more water to your fuel. With luck it gets burned up without too much fuss but a little rough idle for a couple of minutes each morning. If the fuel level is very low, in cold weather, and the car sits for two or three days good luck getting any car to run smooth or start quickly until you fill up the tank.

”FOR ALL THE SKEPTICS
Have you ever noticed your car running SO MUCH BETTER after filling the tank? You have probably been burning condensed water vapor with your fuel. (Doesn't burn very well).”

[asdf123456]

here's a fuel/water separator:

http://www.alamomotorsports.com/pmc/Cat_page26.html

other products including oil coolers: http://www.alamomotorsports.com/pmc/Contents.html