i have a 87 ford f250 with a 351 Windsor and a holly 4 barrel i was driving 45mph and all of a sudden it wont go over 25 to 30 i pulled over and checked the carb plenty of gas in the filter but the choke plate is stuck wide open do you guys think that could be the problem that i need a new choke? O by the way no water in the oil cap or no water on the dip stick help please reply to my email at sbreide471@msn.com