Look for a sticker with the timing specs inside the engine compartment of your vehicle, probably on the driver's side hood. It will list engine class, size, etc. as well as ignition timing in degrees before or after top dead center. The sticker will also tell you other requirements that are needed such as what rpm the engine should be running at when you set timing and if you need to remove and plug the vacuum advance hose attached to the base of the distributor(which could give you a false reading) or anything else that may be needed for emission devices.
If you can't find a sticker, your local library should have a service manual that covers your vehicle, you can either write the info down or copy the page(s)
It has a timing chain.
If the truck is equipped with a V6 it will most likely have a timing belt. However if it has the 4 cylinder it will have a timing chain.
The 2.4 liter 4 cylinder in a 1997 Nissan Pickup has a timing CHAIN
try changing both timing gears
V6 = Belt 4 cyl = chain
Belt manufacturers recommend changing timing belts every 60,000 miles.
check eBay for a86 Nissan truck service manual.
Jumped timing or bad o2 sensor
Nissan's pickup truck model is the Titan. You can choose from the Nissan Titan XE, SE, Pro-4X or Nissan Titan LE. The Titan is available as a King Cab model.
The same way you set the timing of any Z24 engine. The vehicle it is in makes no difference. Do you know how to use a timing gun.
The way to replace a door handle on a Nissan pickup truck can vary depending on the year of the truck. There are several tutorials available online.
Check forums for Dodge truck owners and enthusiasts. Wiring diagrams are posted and made available on such sites routinely.