I currently own a 91 Mazda Miata, It has 116,000 miles on it. Sometimes it takes anywhere from 1 to 4 times to start to crank the car over. If I let the car sit for about 1 week without driving I have to pump the gas to get it to start. It just started to jerk and spudder when I push the gas down harder. i have a feeling it has to be the fuel pump what do you think?