▁within ▁the ▁storage ▁tank ▁itself . ▁Any ▁one ▁of ▁these ▁cont amin ants ▁can ▁cause ▁complete ▁engine ▁failure . ▁ ▁In ▁April ▁ 2 0 1 0 , ▁C ath ay ▁Pacific ▁Fl ight ▁ 7 8 0 , ▁an ▁aircraft ▁carrying ▁over ▁ 3 0 0 ▁passengers , ▁had ▁a ▁close ▁call ▁when ▁fuel ▁cont amin ated ▁with ▁spher ical ▁particles ▁dam aged ▁the ▁aircraft ' s ▁engines , ▁resulting ▁in ▁ 5 7 ▁passenger ▁inj uries ▁as ▁the ▁pil ots ▁had ▁to ▁land ▁the ▁aircraft ▁at ▁twice ▁the ▁normal ▁landing ▁speed . ▁ ▁Sym pt oms ▁of ▁' d ies el ▁bugs ' ▁ ▁The ▁sympt oms ▁of ▁dies el ▁bugs ▁are ▁easy ▁to ▁find . ▁Import ant ▁things ▁to ▁check ▁over ▁and ▁look ▁out ▁for ▁are : ▁▁ ▁Block ed ▁Fil ters ▁ ▁F uel ▁System ▁Fail ure ▁ ▁W orn ▁F uel ▁In ject ors ▁ ▁Cor rod ed ▁T anks ▁ ▁Engine ▁Fail ure ▁ ▁Micro b ial ▁cont am ination ▁is ▁significantly ▁acceler ated ▁when ▁higher ▁b iod ies el ▁content ▁occurs ▁along ▁with ▁lower ▁sul ph ur ▁content . ▁ ▁Water ▁in ▁oil ▁Al most ▁everything ▁on ▁Earth ▁contains ▁elements ▁of ▁water ; ▁oil ▁and ▁fuel ▁are ▁no ▁exceptions . ▁While ▁very ▁small ▁amounts ▁exist ▁in ▁fu els ▁to ▁start ▁with , ▁stored ▁fuel ▁will ▁become ▁a ▁bre eding ▁ground ▁for ▁the ▁micro b ial ▁b acter ia ▁and ▁over ▁time , ▁the ▁levels ▁of ▁damage ▁change ▁from ▁dissol ved ▁to ▁em uls ified ▁and ▁finally