That says its only firing/running off the CSV. So the injectors aren't firing. Realistically you need to check the fuel pressure but chances are you wont have the kit for this (nobody ever does for K-JET - i ended up making my own years back). You could either crank open the 4 injector banjos at the metering unit and see if you are getting pressure there - or you could pull the injectors out the inlet and place in jars, crank the engine and see what, if anything they are doing. The latter being a far safer/meaningful option, just 10mins more hassle

If the WUR was gunked up, then my bets are the metering unit is equally gunked and this will be your issue, but unfortunately its a case of working backwards to find where the blockage lie.

As with any high pressure fuel system, for the love of god make sure youve got no open flames etc and an extinguisher to hand when doing these tests