I have a hyster h280xl and I try'd some ether in the intake and It won't even kickback like if wanting to start.I have already took out all the air from the system, with fuel already at the injectors.I haven't performed a compression test yet, but Iremoved the injectors cleaned and inspected, while also cranking engine/without injectors. I have strong compression at all cyl's. I removed valve cover and all valves open and close okay. I'm stoked on this one. Need some good experts help. 65panhead