Car has been sitting up and will not start now. It seems to not be getting gas and I do not know how to prime a fuel injection system. Any help appreciated.

Without knowing the vehicle a fuel injected car all you have to do is turn the key on and off 3 times for 10 seconds each. Carburetor is a bit harder. If the system does not leak cranking it can get it done but dumping a little gas in the carb will cause it to start and pump the manual pump much faster to prime the system. With a leaking manual pump it just takes a lot of cranking.

reminder. water doesn't like to go through injectors alcohol formulated for this purpose can help. jusayin

The electric fuel pump in this fuel injected car is located in the fuel tank, the tiny fuel pump is lubricated and cooled by the fuel it sits in, when you run out of gas it can destroy the motor and pump, this goes double for old high mileage vehicles. I have seen this happen dozens of times over the years in fuel injected cars and trucks.

The fuel tank is tucked up underneathe the chassis mid-body. What your problem is is that when you ran out of gas the injection system sucked in air. Your fuel system needs to be primed to get the air out.

Well, it may not be getting fuel. Turn the key to "on" but not start. this will activate the fuel pump.
After a few seconds, then try to start. If it doesn't start, turn the key off. Then turn the key on and pump it a few time---only a few. Take your foot off the pedal and wait a few secs, then try to start again.

It used to be we could "prime" the carburator to get a car going but nowadays cars are fuel-injected and don't have carburators!

Make sure your battery is fully charged. Sitting that long would have weakened it. It could still turn over but not have enough juice to engage the starter fully to get the engine going. Did you try jumping it?

Anytime you plan to let a car sit for a while you should use a fuel stabalizer to prevent the gas from going bad. After you do get it started fill the tank and add some fuel injector cleaner. Fuel injectors get clogged easily when the car sits for awhile.

Is the pressure in the fuel system not holding? Fuel pump may be failing or the filter may be bad. Sounds like you're pumping the fuel system back up to pressure before the truck will start. Like when a fuel-injected car runs outta gas and you have to prime the system before it'll start again.

sorry buy your fuel pump has failed, when u run the car out of gas the fuel pump which is in the fuel tank severly overheats and seizes up, the pump is cooled completely by the fuel is sits in.

if it's fuel injected,look on the fuel rail for a schrader valve--looks just like a valve stem on a tire but shorter.remove cap,again just like on a tire.turn key to on-push valve stem in as if to let air out if you get air,then gasoline,you have just bled the system.replace cap,start car.if you get no gas,remove gas tank cap,turn on key,listen for ""hum'' of fuel tank.no hum,check fuel pump.modern[plastic] fuel pumps will self destruct if run dry,even for a short time.

There is a check valve in the fuel pump that sounds like it may have gone bad. Check the fuel pressure at the shredder valve, there should be 60 to 65psi during the prime and will drop 5 psi when the engine is running. Once the fuel line is primed, check to see how fast you lose your prime. Since you replaced your injection system, we can eliminate the fuel pressure regulator leaking which was common on the injection system your truck run's on. If the fuel pressure drops fast then it's going to be a bad check valve at the fuel pump and it may be time to replace the fuel pump it self. Good luck and hope this helps. Note: do not try to start the engine with putting gas through the throttle body, it's been know for small fires to start and burn the spider injectors. 

Check/Change Fuel Filter(s), PVC Valve & Emission Hoses
and/or
Gas that sits too long won't fire easily that's why we have to add winterize to our lawn mowers!
Try filling the tank with some high grade fuel cleaner additive. This stuff is like rocket fuel (about $10).
Also add a can of dry gas as you may have a lot of water and water vapor in your system!
Get a couple more cans of starter fluid too. (I always needed at least two to get my diesel running for summer)
Keep spraying and starting (It always took me at least a full can sometimes 2)
When it starts keep the gas pedal down and rev high for a good 5-10 minutes then see if it will idle.
If it still stumbles and falls consider adding another can of fuel system cleaner and/or dry gas.
Don't drain the tank as this usually just makes it worse by letting the bottom sludge stir up.
Never let your gas tank get too low as this will foul up your fuel system and always add fuel cleaner after every oil change (a must for fuel injection and cat. converter care)

Good Luck!
jack
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