Hi all,
Bought a 07 Gu crd, has 190k on the clock, seems to have power, starts fine, runs fine but is burning excess fuel and is blowing black some. Seems like there is a bit of vibration from the engine around 2500 rpm. Intermittently the turbo will not spool and I have to take my foot off and on the throttle to get boost.

I have replaced the MAF, air filter and sources of boost leaking (intercooler and turbo hose), removed the injectors and had them tested, they all passed.

Will be installing a dawes and boost controller tomorrow.

I blanked off the EGR.

I am kind of running out of things I can think of to fix apart from taking a look at the injector pump, do you guys think this might be faulty? Is there a way to test it by myself or a professional service? Any other suggestions as to how to solve my problem would be much appreciated.

Thank you