Cheers lads, its a stock MT2, T-15 with rotostart. The fuel tank has a priming button, which i understand is susceptable to air leaks. I've tried checking for air in fuel pipe, but its difficult to see due to colour of pipes, can't see any bubbles though. I've tried two new glow plugs, to no avail.
I think its time for a little dismantling......lol. Just hope i can put it back together again, without any bits left over.....

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What parts would you recommend i upgrade, may as well hop up while its in pieces.