Thread: TD5 Disco 2 won't fire

Hi Guys

I have read all the other TD5 Won't start and Disco won't start chains but it seems this issue is a little beyond.

Vehicle was running sweet, drove it into the driveway last week, went to move it into the garage to do the panhard bushes later that afternoon and she wouldn't start, eventually feathering the throttle, got it to start _real_ rough, hawkeye in cylinder roughness went from -20 to +20 across the 5 with cylinder 3 being close to 0

Its not using coolant, no water in oil, no oil in water, no bubbles in coolant tank.

No oil in the harness but did clean it out anyway with contact cleaner, still not starting without lots of throttle attention but was a little smoother when it started with only cylinder 3 way out of roughness.

Engine has 320k on the clock and had never had injector seals so ordered the seals and washers, done them Friday, everything was perfectly clean before going back together, injectors 4 & 5 had build up on them, the rest were clean, washer 1 had seen better days around the outside, base of the injector holes in the head had carbon marks and plenty of floaters in there, cleaned it all out with vacuum, air and a cloth.

Turned the engine over with the fuel pump disconnected to get rid of all the diesel in the pots until there was no more mist.

Injectors cleaned with a bit of brake cleaner and washers and o-rings replaced and injectors re-seated carefully, bolts done up to 24ft/lbs, each lobe lifted until it was at its peak (just before it dropped off the back), the plunger wound down to the bottom of the injector, back 1 full turn, nut locked off.

Loom back on, primed (up to 8 straight primes) and it turns over perfectly but doesn't fire.

No fault codes are logged that I can see with a Hawkeye, it is running the TRS modified non-NNN ECU

Battery voltage is good.

The valve in the fuel filter assembly with the filter on it was pretty clogged, replaced that and the crank angle sensor this morning, engine cranks happily, no knocking, but won't fire.

Plenty of fuel at the FPR (removed the hose into a bucket to test) and during the primes could hear fuel circulating

Ripped the injectors out just to check I didnt have a bad seating washer / o-ring, no diesel in the rocker cover, heaps of diesel in the cylinders, injector tips soaked.

Dried, reassembled, same thing, zero faults logged, no fuses blown, power to the glow plugs (granted the glow plug indicator doesn't come on at key up time, but i can test it with Hawkeye and illuminate, tested 12v to the plugs themselves when triggering the relay)

I wouldn't be overly stressed but this is the only car with a child restraint in it and I have the little one this weekend and stuck in the middle of nowhere, and I can't see where I have missed anything, any advice anyone??? Please??

Presently out at Stanthorpe in SE Qld so a long way from parts and being Anzac day Tuesday, express post is going to be Wednesday

Rob

Hi Rob
How long did engine run after you did petrol rag, I would think that the air would purge if it was running.
Did bit stop running by itselfbor you turned it off by key?:
Cheers
Rob