when u turn the key to start my 93 xj its takes forever to start. is there anyway to fix this? it always starts up but your always wondering if going to start or not. my 91 starts right up but my fahter had an 87 that was the same way. i was told its because the oilpressure has to build up, and if you buy a certain oil filter it will fix it. anyone know if thsi is true? any help would be great.