Ok a friend of mine has got me to have a look at her 99 Wizard with a 4jx1. It wont start. When cranking it chuffy whiteish smoke out the exhaust and will show no signs of life, once the oil pressure light starts to flicker and go out it begins to want to start and on occasion it will run but really really really badly and not for long - loads of smoke! It also looks as though it has diesel in the coolant. Is it possible that the injector sleeve o-rings are stuffed and some on the fuel is being sent to the coolant passages, not allowing the engine to run as its not getting enough fuel?