After having a new timing belt and and all the bits fitted.I am having a problem when I start up.The car seems to have a flat spot.IE will not respond to the accelerator.It ticks over at 1100 RPM for about a minute then the revs drop to 800 and away we go.Sometimes a great deal of smoke is emitted but not always.I have had it up at Paul At kinsons on his analyser it cleared a few faults but he could not fathom this one out. has any body got any ideas.Incidentaly Paul cleaned loads of connections.Reckons it may be a bent valve .The motor runs well apart from the initial hesitation and is quite nippy. :( :(