Check Ecu for codes, check fuel pressure after the filter, check for spark, check and clean ptu/cas connections.
Interested in Advertising on 780Tuners? Please contact us
Car drove fine the night before without any problem but the next day it would not start.
Cranks but would not start. Tried it a few times and no go.
One thing I noticed is i could not hear the fuel pump priming. So I checked my fuel line pressure gauge and no pressure.
I checked the FCPU and it was bypassed already.
Now is this a fuel pump issue? Is there a way to bench test a fuel pump to find out if it's the issue? Or could it be an ECU issue?
Any help in the right direction is appreciated.
Thanks
Check Ecu for codes, check fuel pressure after the filter, check for spark, check and clean ptu/cas connections.
Checked ECU Code 55 All Clear
No fuel pressure after filter
PTU/CAS connections all clean and snug
Have not tried the spark test just yet...
No fuel pressure in the on position. I would check for power at the fuel pump. If 12v, then fuel pump is the problem. If no 12 v, then back track at the relays.
Also check your fuel pump link by the battery, under the black cover in front of the battery, closest one to the engine marked Fuel Pump Eng Inj:
![]()
My Zs ARE HYBRIDS, THEY RUN ON GASOLINE AND MONEY
Finally had time to check voltage at the pump.
Yes I do have 13.4 at the fuel pump connector but pump won't prime.
I guess my fuel pump took a dump.
Now I should probably get a new one... I'm guessing a Walbro 485 would suffice? And leave the FPCU bypassed?