Compression Ignition Addict
Join Date: May 2008
Location: Blue Springs, MO
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poly is a chicken fat like buildup that is caused by oxygen, moisture and metal. it will plug pickup tubes and filters.
be sure to check the insides of those tanks, mine is plastic on the outside and metal on the inside.
that part has all to do with cold starts and damage over time. cold veg is thicker and may not burn properly. causes carbon issues and such. it can also get into the oil. ive read a few forum posts where this stuff can get into the oil and block small passages, like valve guides, lifter rod areas, etc. never expirienced it personally, but ive seen pictures and such. clay has a nice pic of a nasty oil pan from a leaky injector.
there ar a few guys who do this and run fine for a long time, but im not going there. partially because my fuel pump doesnt pull the veg well, i want a larger in bed tank, my stock tank is either poly'd or the pickup tube is clogged or both. i also dont want my fuel filter waxing with unflushed veg in cold weather. ive had starting issues in the past in the cold with a partially flush system. the truck runs well and i want to keep it that way.
Late 99 (2/99) Black F250, CC LB 4x4 Lariat 214k. All Stock for the moment...
1995 PSD, ext cab, one wheel wonder
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, 297k miles, 30k on wvo. totaled 5/8/11 RIP This truck is for sale as a parts truck (Jason is about to receive forged rods, and drop kick his PMR's)
DB high torque starter
DIY Electric fuel w/ wvo conversion
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