Hi sputnik sorry pal I'm totally new to this forum didn't realise you'd replied to my question. I've done the obvious things like replacing the fuel lines, checked if there's a leak in the fuel tank, checked for leaks on the carb by applying soapy water and blowing down the fuel line, seemed to be OK. Not checked the front bearings, but like I said all the parts on the engine are brand spanking new apart the the engine chassis (I know could've brought a brand new complete engine for what I paid out for the parts!!). Glow plugs ive been using (FASTRAX PLATINUM No.4 MEDIUM HOT) Headshims I can't remember as I built this last year before the summer. Fuel I've used a full 2.5L tub of Byron 25% trying to get this truggy going!! Here's a link of the video I took when I mange to get the engine going this is how it runs:- (https://youtu.be/2k580pvgcOA)