Is there spark at the plugs and fuel at the injectors?

The KE jet sometimes gets airlocked if you break into it (like when fitting a cylinder head) and needs bleeding like a diesel fuel system. Crack all 4 injector pipes off on the meter head and get someone to crank it over while you watch for the air coming out. When it is just fuel flowin out, tighten the pipe and see what happens. You may need to do that several times. Mine had been in peices for 4 years and took a lot of fooking about to get all the air out of the system.