annem

Yes I agree the video was good

Is it possible to lift out the engine without going right back to where it was fitted originally?

We are homing in on the problem! The engine pistons are not moving as they should. One half are but on the other side two pistons are permanently down and the other two up. It would be useful if Lego instructions made a note to check the movement of moving parts before they become embedded and difficult to access later on. The crown wheel is correctly linked. Sorry guys I hadn't seen your helpful posts when I posted again. I'll make sure we check. Bedtime looms though!!! yes rear wheels only turn together for a short distance before meeting resistance. You are all awesome helping a granny in this way!

Thank you very much. The explanations and video have been very helpful. Completed car does not move forward though. There doesn't seem to be the drive shaft or something is in too tight.. Hard to see now it's completed! In other words the "Crown wheel" is not turning and there doesn't seem to be anything to make it turn. I've always wanted a Morgan or a Caterham and now I feel I'm well on the way to a self-build!!

Oh great. Thanks. I adore my grandson but he does have a tendency to panic! Why don't we all go round in circles then? My dad would be ashamed of me. He was a shipwright and seemingly knew how everything worked! My husband was pretty good too but, very sadly, he died in November aged 71. My grandson's father left and remarried so is as much use as the proverbial! We may live in a liberated world but still feel the need for a man!!!

My grandson (age 9) is building the racing car. He's nearly finished and is distraught that he has just noticed that when turning one rear wheel assembly (no wheels on yet) that each turns in opposite directions. I've been helping him by checking each step. Do we have to go right back and any ideas which page he has done wrong? Sorry I'm not a lego builder nor technical. Thanks