86 2.8D Fourtrak... was running like a dream, doing 80 miles a day. Decided to do a preventative maintenance service (oil, air, fuel, plugs)... Now when i start it, only a couple of cylinders fire, white smoke, then clears and runs on all four just fine. Any ideas?? Runs on slightly on shut down as always. Seems daft but the oil filter was smaller than the original...would this rake up the pressure and cause a prob? Very bizzare. 1st lesson in Daihatsu... If it aint broke dont fix it! Trouble is that due to excess starting required battery often gives up before firing. HELP!!!