hi guys, just finished putting the engine back in my s2 today after rebuilding it, however it wont fire up, i have spark and fuel is getting up wen first cranked, it will fire up, run for about 2 seconds then cut out straight away, i can here the fuel pump run wen i turn the ignition on, and it tries to start wen i turn the key, but just wont fire, like its losing the fuel supply, i have checked the pump relay and its a little black inside so hoping its just that but need to be sure, any help wud be appreciated. cheers.