Postby smj999smj » Thu Jun 06, 2019 5:17 pm
Sitting any length of time is the worst thing for a vehicle. Rubber or neoprene seals can tend to go bad in the brake system and, if equipped, the hydraulic clutch system. Tires need to be driven and sitting can cause them to get dry rotted and lose their elasticity; the same goes for drive belts. These are some things you'll want to take a good look at. Your 2003 should have a VQ35DE engine, which is a timing chain engine with individual ignition coil packs. You'll want to check for possible rodent infestation and/or damage, especially in the air cleaner, and check the cabin filter. Look for chew marks on the wiring in the engine compartment. Check all of your fuses. Check for any open recalls and have them done at the local Nissan dealer, if any exist.
You need to define "doesn't start." Will the engine crank but not fire or it won't crank at all? If it cranks, try spraying carb cleaner into the intake and see if the engine will fire. If it does, you have a fuel delivery problem. If it doesn't, you may be lacking spark, so check for that. Last, check for compression.
If it won't crank at all, you'll need to check the starter motor and circuit. It wouldn't hurt to get an OBD II code reader and check the powertrain codes.