Greetings,

I'm not familiar with the Kia 2.9L diesel specifically (it is not offered
here in the U.S.), but I do have some general experience with GM and
Ford/International diesels, and the basic principles are the same for all.

If you can get it to run by pouring fuel down the intake manifold then it is
most likely a fuel related issue.  Fuel injection is to a diesel what both
the fuel supply and ignition system combined are to a gas motor.

Beginning from the start, you could have no fuel in the tank, a clogged
intake in the fuel tank, a clogged filter, a bent, crimped or disconnected
fuel line, a bad fuel transfer/lift pump, the fuel injection pump could be
damaged, have an electrical connection disconnected or be severely out of
timing, disconnected, clogged or crimped fuel lines to the injectors, air in
the fuel lines requiring the motor to be primed, faulty or clogged fuel
injectors, or perhaps a bad connection or bad ground on any of the
electrical components for the fuel supply system.  This is not even taking
into account any of the possible electronic issues you could have with the
on-board computer/ECM that could be preventing your motor from running.
Check all of your fuses, and ask if there's an automatic fuel shut-off
somewhere that needs to be reset.  Change the fuel filter, drain the
fuel/water seperator, purge the air out of the fuel injection lines and try
again.

You're only choices are at this time is to relieve the independent garage of
the job and either send it to the Kia dealer or a shop that specializes in
diesel motors and have someone who has extensive diesel experience work out
the problems.  Working on a diesel is NOT like working on a gasoline motor
without spark plugs, regardless of what anyone may tell you.

Good luck, I think you're going to need it - Jonathan