Outer Limits 4x4 Board

2.8, aftermarket turbo, to date it's been pretty trouble free then the other day it stalls at the lights with no warning, starts fine and drives home (only about 2klm's) idles fine for a while then revs drop till it stalls. this time it had trouble firing but started and stalled. Changed the air,fuel filters started and idles ok, had to give it a few revs a few times and it stalled again.

I've been running Caltex Delo400 recently as it's what we have on tap for our trucks, wouldn't have thought this would be a problem?

Wondering if anyone has had tis ahppen or can think of a reason. Will check for loose wires or cables maybe, but can't think of anything else that could cause it.

Lack of fuel would be the main thing i would be looking at; take of your fuel line and check the pressure also take out an injector (still connected to line) to see if they are performing properly.

Delo400 is quite thin oil but is good and shouldn't cause any problems if you were using a thick oil before you will notice it using more oil than nromal.

Did it cough at all or just revs lowered and died
If it coughed check your compression, oil in radiator or white smoke from tail; fingers crossed not the head gasket.

Yeah, I had a look at some of the fuel lines, they looked they might have a few small cracks in them so it might be sucking in some air.
The radiator still has toyota coolant in it and is clean as. It blows no smoke and it did just loose revs and die, no coughing at all.

I would crack the supply line off each injector 1 at a time, letting it almost stall but keep it running, check for fuel a each line. Make sure your injector pump is still lined up with the timing mark.

The first thing i would check though before even spinning a filter is the shut off butterfly, make sure that is full open and not closing off when it stalls.

Easy fix turned out the lock nut for the idle speed screw had come loose and it had backed itself almost all the way out of the thread. Idles like a champ.

Isn't it funny how we always assume the worst
Hopefully get mine back today or tomorrow from its rebuild