Yamaha zeal fzx 250 1998 with 48000 kms. I just flushed out my radiator with tap water with a hose garden for pressure. My bike was working fine before I touched it. After the flush I greased the chain. After that I tried to turn it on and the engine won't start. I get rumblings, low rumblings. I drained the battery trying to turn it on. I charged the bike that night. Next day I tried again, and a no start like before just the engine rumbling trying to start. The fuel filter had brown liquid in it...I don't know if it was there before hand, I think it was, So I emptied that and cleaned it with fresh fuel from tank. This is where I'm holding now. Although I put everything back. Components are all working fine I think eg fuel pump, battery. More info : After I flushed the radiator, I did spray (lightly /showered) that area with water to wash off the excess fluid. I'm not sure where to go next. Any help would be appreciated.