Right so some of you may already know i have fitted a puma 1.7 engine to my MK4 fiesta but i decided to remove the engine and clean it up (JET IT OFF) and now after re assembling i have serious problem, it initially started and ran like a jem for about 10 seconds then it cut out, and now after stripping down the inlet and exhaust manifold it keeps firing out of the inlet manifold, i have not messed at all with the timing so im very confused as to what it could be, i had it OBD checked and nothing came up, any ideas?