Hi, the 60 Series crew told me to repost in here, so here goes. I just bought an HJ60. Loving it, it's getting me where I want to go, and back again. But I have noticed there is a flat spot in acceleration, just around 2000rpm. It's more noticeable in 4th gear, where the car almost sort of 'hops' and I have to back off the throttle and apply power again slowly. Sometimes it makes it better, sometimes the hopping is quite bad untill she gets over 2000rpm. The engine is (from what I can tell) a standard 2H but with the addition of extractors (headers). I noticed the last oil change (and I presume filters) was 5000km ago. Could this flat spot be a result of blocked/dirty filters (air or fuel) or is it a injection timing thing. I'm a bit new to the world of diesels. BTW it's a 12 volt model, as were all the australian assembled HJ60s. Cheers!