4200 fuel pump dead solution tutorial

ahvlanico

Junior Member
Messages
185
here is my topic with some translations..



symptôms: you loose 3 cylinders
use a memoscan u581
P0300 defaut on cyl 1 2 3

u581-scanner-1.jpg



swap the coils 1/2/3/4 with 5/6/7/8 to see if the default change of cyl.

check the color of spark plugs.
white= missing gazoline
black = no ignition
marron = ok

test presure.





maserati-imag0314-img.jpg

maserati-imag0314-img.jpg


swap the hoses from the tank.
this should change the side of deffault.

maserati-imag0314-img.jpg


if you have still doubts you can check the pumps like this

maserati-imag0314-img.jpg



remove tank

maserati-imag0314-img.jpg


remove pump

maserati-imag0314-img.jpg


maserati-imag0314-img.jpg


remove fuel gauge

maserati-imag0314-img.jpg


hope it could help !