my sportrak (EL) is an 89(g)reg when i start her up she starts up straight away no problem,however when i start to drive her she sounds sluggish and lacks power, i have to try to keep the revs up until she worms up.How does the automatic choke work on her cannot see a manual one anywhere, the revs after starting her only goes up to 900rpm to 1000rpm so im thinking the auto choke cannot be working because the normal revs on tickover surpose to be 900rpm am i right? thanks for the comments from my last posting about the oil leak .