VLT won't start, i'm at my wits end I swear

[bpardon]

That way u can track down a possible broken wire inbetween the ecu and coil etc. And have u checked the spark at the coil as well?

 

[87RB30VL]

Ah I see, cheers man. Yeah has spark to coil and leads. Tried adjusting the dizzy up/down, throwing some fuel down the plenum, flipping the disc that sits on the CAS, still no deal.

Next step is changing the spark plugs on monday

 

[Scrusy]

I'm putting my money on a cracked spark plug. Same sorta thing happened to me a while back. Changed everything last thing was the plugs. And one had a hair line crack in it

 

[nasty1]

It would need to be more then one spark plug to be as bad as it is.have all the parts you have tried been tested and prooven in another car?

 

[87RB30VL]

I'm putting my money on a cracked spark plug. Same sorta thing happened to me a while back. Changed everything last thing was the plugs. And one had a hair line crack in it

Just got back from Supercheap, about to swap all the plugs with new ones now

It would need to be more then one spark plug to be as bad as it is.have all the parts you have tried been tested and prooven in another car?

Yeah all the parts are tried and tested, let's hope these spark plugs help, got 6 new platinum ones

 

[87RB30VL]

Old plugs were black as **** but changing to new ones didn't help. I pulled one of the new plugs and cranked the car while the plug was connected to the lead, and the spark plugs spark fine, so it must be injector based (as I'm getting fuel pressure to my fuel rail in the bay, pulled the hose off, let the pump prime and she squirted fuel so it isn't that)

 

[87RB30VL]

Did an ECU diag, got:

14:- Vehicle Speed Sensor Circuit
23:- Throttle Switch Circuit
24:- Neutral Switch Circuit
31:- Satifactory Operation (non air-con vehicles) OR Air-conditioner Circuit

Tried connecting the purple wires on the relay next to the battery to bypass code 24, still not starting.

Code 31 is normal, air conned VL.

Not sure about 14 and 23 though. My speedo has been sticking/reading 0 recently and I'd have to tap the dash glass to make it unstick and jump back to the speed I'm driving at, so I dunno about that one.

Also have no idea about the Throttle Switch Circuit.

 

[detox_nath83]

Code 14 and 23 are cleared by
Pressing the throttle to the floor clears 23
Car needs to move faster than 10 kph to cancel speed sensor so dont worry.
Has to be your injector circuit if you have spark, fuel to rail and compression.
How's the EFI relay and related fuses.
Try another relay in its place to be sure

Regardless of a buggered plug car would still run just fire on 5 cylinders and run like ****

Adjusting dizzy up and down will throw your timing out. So once running use a timing light and set it to 15 degrees which is factory. Or it will either be a slug or be too advanced and ping

 

[87RB30VL]

Tried different relays for EFI, still no luck.

Grabbed a whole dizzy off a working engine, swapped the whole thing, made sure everything lined up when swapping, still no luck.

 

[detox_nath83]

Sure u slid it in properly bud. It's easy to have it run out as it turns slightly when installing because of the angled gear.