B18C fuelling issues

Odin

New Member
Joined
Apr 25, 2021
Messages
4
Car(s)
EK9 B18c
Opinions needs asap

Back story : 1998 EK9 with 96spec B18C

Fully rebuilt with standards cams etc nothing special, engine back in ran in with 1000 miles low revs before first VTEC all good no issues, new Clifford G5 fitted

then the below started :

** fuel pump fails ** ( replaced with high pressure walbro)

** car over fuelling running extremely rich **

** Lamda sensor not reading **

** fuel gauge dropping rapidly and car cutting out**

** New fuel pump will no longer prime with reds **





What we have tried so far :

Apexi Neo remapped
Changed 02 sensor
pump has power
fuel rail and injectors checked

Car wont start now past the reds anyone have any ideas?????
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firebass

Member
Joined
Aug 15, 2010
Messages
272
fuel pressure regulator? 1 time i had problem with the return valve of the fuel pump and it was draining the line like water in a bottle , the fuel railing couldnt hold enough pressure, any chance u checked also the IACV ?
 

Kipper

Well-Known Member
Joined
May 27, 2008
Messages
2,158
Strange problem you're having there.

Do you have a ground from rocker and one from gearbox to solid, bare metal steel? And other grounds are to bare metal?

Would be worth trying a main relay as well, does sound like an intermittent voltage issue.
 
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