after fittting a new meter unit. new fuel pump. its been timed. new plugs leads. rota arm. diz. had a tuner come out cant get it running when runs its only for 3 to 6 secs. iv also cheaked my pump relay. my cold start valve. what it could be

 

metering unit turn the scew on the top both ways till it trys an then you aint far off, will need a set up now m8 im affraid

 

also if it runs for 3 to 6 secs then cuts out could my imobizer be cutting in or like you said just needs a good set up thanks