I have already posted about a problem with ALB and now another fault has appeared. Sometimes after a journey I turn the ignition off and then restart the engine starts up again but is dead rough as though it is "missing".If I then drive there is alot of emmisions from the exhaust but gradually the engine will return to normal again after about 5mins.Starting the engine from cold is never a problem. It is a 1991/92 honda concerto 1600i and has 140,000 on the clock. Can anyone help?