I have a problem with my Sportrak. It is very very reluctant to start, eventually chiming in on one or two cylinders. When it eventually runs, it runs well for the first 5 or six miles, then starts missing/stalling etc. I have changed plugs, leads, distributor cap and rotor arm, and lastly the coil, all to no avail. I have a 89 1.6EL, carburettor etc.
It has run without a problem for the last 4 years, but I'm getting desperate.