whan i start it up first thing its like its missing and when youy go down the road get into 3rd gear let foot of throttle a large cloud of smoke blows out of the exhaust then it fine it runs and pulls fine engine only done 95000 and had a service 3 mths ago cam belt done 10000 ago the crank pully bolt worked slightly loose and i retightened it thinking thats when it started doing in any ideas anyone
eugene