How much will it cost to fix this

My question is how do you know 'exactly' what was put into your gas tank?? You stated "a water bottle full bottle of bleach, and an entire half gallon of sugar water ". Just wondering how you know that, did they fess up to it? Just trying to make sure exactly what happened as these vehicles have a lot of inherent fuel pump failures anyway! So are you SURE this is what actually happened? Injectors should have been flushed with a 'pressurised cleaning kit' first thing! Then the pump, tank and deliver circuits would be next in line. Fixed a few of these myself over the years!

Find another shop.

The correct answer is a disappointing one. You not only need to have gas tank cleaned but also:fuel lines,fuel pump, fuel filter, fuel injectors,catalytic converter,possible o2 sensors,internal engine damage possible,etc. Basically any and everything that your fuel system touches will need attention whether it be right away or in the near future. Broad picture:fuel flows from tank to injectors down into engine onto valves,etc and burn off goes through catalytic converter. As for cost, it really depends on just how much you want to fix right at the moment Ex:just empty tank and change fuel filter and hope for the best. Hope this all works out for your best interest.

I actually had an o3 explorer and a 94 ranger that had sugar poured in the tank of my customer's vehicles. the explorer tank had to be sent off to a radiator shop so the tank could be flushed and I had to flush the lines and ended up replacing all the injectors,fuel pump and cleaned the fuel rails. The ranger just needed the tank cleaned and a fuel pump. The longer you wait I know for a fact that the sugar turns to syrup like goop and gets into EVERY orifice and ruins any moving part it comes in contact with.

#2 is so right don't wait. wow a friend did this, give him the bill for xmas

well if you didn't try and crank it it should be under 500 round 300 to just drop gas tank and clean out but if you tried to crank it you lookin at a complete engine haul