Thanks: 
Likes: 
I have been having problems with my fuel pressure dropping off with this cold weather. I had the problem last year too and never found the cause.
I contacted FASS because my pump was making some weird noises. They told me:
In the old days there was fuel gelling. The old fuels would gel and clog key elements of the fuel system, particularly filters. Hence fuel heaters. Many of us have replaced our stock pumps with after market pumps, without heaters. Well girls and boys, it seems we are making an error and setting ourselves up.
The recent fuel has most of the sulphur removed. The fuel makers replaced the lubrication properties with a soluble Paraffin. The bigger problem is BioFuel. We're getting 10 to 15% at the pumps and don't know it. The dealers don't even know it.
It seems the paraffin separates from the fuel in much higher temperatures. The paraffin can start to separate from the fuel at +40*F! over time this will start to clog the filters. The primary water seperator on the dual filters is the first to clog.
Fuel additives cannot address this issue, and only help slightly. A few of the additive makers have addressed this with statements. Apparently there is no fuel additive that addresses the wax separation completely. The filters are now clogging with a Non-petroleum product. Heat is the only solution.
When the temperatures rise, some of the wax will dissolve back into the fuel. No damage is done by this, but you can, over time, start prematurely clogging your filters.
For those in the northern environments, Fass recommended adding it's fuel heater. This will dramatically reduce the wax separation.
Credit goes to Gene Brown in FASS Tech Support.
@IGOTACUMMINS.COM
Register To Reply
Originally Posted by thewildkarrd@doublerdiesel
) I stopped to get fuel and felt my FASS 150, the element was warm, and the filters were warm. very pleased with it, being that cold and grabbing the filters and not being cold it works well. paying that kinda money it better work...
Bookmarks