my neighbor pissed off an ex-employee and they put a whole bag of sugar in his gas tank. he got about 6 miles away from his house and it quit. we towed it back found out what happened and had to replace the injectors, lines, tank, pump, filter, clean the valves... basically the white sugar mixed with the gas and turned into solid carbon cloging up everything. we cut the tank open to see what it looked like in the bottom of it and by that time it had turned into a semi solid black gunk. i looked like the gas melted the sugar grains together. when we tried to blow the lines out all we could get was a very slight ooze of a blackish brown paste being pushed by 140psi of air.

i def wouldn't drive it!!!!

 

If you've got brown gunk in the tank, the only thing it could be from is the water in the gas starting to dissolve the sugar. Gas is non-polar and can't dissolve sugar. Water and sugar are both polar molecules, you do the math. So if any sugar is getting dissolved, its getting dissolved by something other than the gas.

Flush the tank, change both the sock filter and the inline fuel filter, and you should be fine. Nothing should be able to reach the injectors if the fuel filter does its job properly.

Sugar in the gas tank is for people who don't have any chemistry knowledge. There are much, much worse household products to put in a tank then that. Actually, even tap water would be much more damaging than sugar. I know of some really good ones but I'm not telling.

 

i guess it wasn't guite like gunk, poor choice of words. it had a consistancy more like small granular gravel chunks and the stuff in the line was slightly more puddy like. this was also years ago i think the vehicle was a 98 and it was more or less new maybe a year old, two at the most. so i guess its possible it had a little water in it but ethanol is out of the question.