I have read your article with interest I have recently bought a ZR with the 2 litre l series engine (115)and I am well pleased with my purchase so far ,I do have one issue you may be able to help with though,under load when the engine revs over 3250 rpm it feels like it just cuts out and misfires and I get a lot greyish smoke out the exhaust and a smell of diesel,up to this point the engine pulls like a train,any suggestions, thanks in advance.