Quote Originally Posted by geezer101 View Post
That looks like water. And it has been there for a long time. Yep, that'll screw up how the engine is running - you can try adding methylated spirits to the fuel to force the water into solution. Afterwards add a good quality injector cleaner and fingers crossed it will sort it out.
I just wonder how it got in there? The seals are good around the fuel level thing, and the fuel pump and as far as I can tell the tank hasn't been compromised, as well as the filler neck is in tact and not ripped. Maybe some idiot dumped some mixture of fuel and water in it a long time ago.

I'm gonna drop the tank and clean it out and take the injectors out and inspect. I have until Thursday when my new denso fuel pump gets here.