RB30 VL PROBLEMS

[Nickkk]

VL commodore was running, started to blow black smoke on idle and eventually died. Wouldn't restart 

 

Engine had 

New spark plugs, New leads new cas, new oil & so on! 

 

So I've checked spark on all 6 have spark, fuel at rail & checked injectors they are all spraying mist so working as far as that goes.

Re timed it to tdc on harmonic, and mark on cam, and #1 on dizzi. 

Multiple times. Slightly before 1 exactly on 1, even spun the dizzi as tried

Rotor is turning when motor winds

Can hear fuelpump prime. 

Checked tracks and caticupators in ecu all checked fine and was running prior anywhoo

 

Replaced fuel reg off my other going motor, tried coil, tried cap, rotor, 

Tried other plugs and it goes to fire but doesn't, tried re timing. Checked to ensure its on #1 on each cycle of winding it by hand.

Tried unplugging MAF,TPS, 

 

Got codes on computer for coolant sensor, no aircon, 

Edited October 27, 2023 by Nickkk
Thought I'd add in more details

[Nickkk]

Has spark on all 6, but did originally stall on black smoke  while idling all of a sudden. Wouldn't rev, 

Fuel to rail,

Injectors spraying mist while winding

 

Brand new cas, plug, & tried 2 coils, was brand new plugs b4 it died, not even 50kms on them. 

Tried fuel reg off going motor,

Tried AFM disconnected, connected 

Sorter wants to fire but doesn't. 

Checked main earth, plugs near battery, fuses, relays switching around. 

Brand new external fuelpump

Fuel filter

Hear the fuelpump on the outside tank working. Inside I can't over the other one!  

 

Only things.i haven't checked are

Tank fuel pump,   

 

Get 3 codes in diagnosis mode 

14 for coolant sensor, one for starter circuit which obviously I didn't have car running so it would clear the starter circuit code if I tried wounding it

 

 

Edited October 27, 2023 by Nickkk

[GTSBoy]

So, given the code for the coolant sensor, what have you done to diagnose that?

[Duncan]

It might also be a mechanical issue, perhaps try a compression test

[Nickkk]

I've replaced coolant temp sensor, so that's cleared, done internal fuelpump  It now starts but only with afm unplugged. It'll idle and rev upto 2000 but plugged in it won't start. Plug it in while running and nothing changes so my guess is  that's not working, but closer! Idles and sounds good. No vacuum leaks from what I can hear, went over everything anyway

 

Brand new afm coming so I'll update on how that goes! But rather simple once you start ticking things off

Edited November 24, 2023 by Nickkk

[Dose Pipe Sutututu]

Sounds like you've narrowed it down well.

Next logical step, DBW conversion, COP, sensor package and Haltech Elite 2500.