My 1992 jeep Cherokee Laredo four door won't start and its been over a year since it ran and even if I put gas in the throttle it just cranks and the engine won't start and i would be interested to know what parts should be replaced if the jeep won't start but turns over and keeps cranking but not starting, the 1992 jeep chorokee seems simple but I need to know what it'll take to make it start like new