My car is having a hard time to start when i put gas in my car.i had a fuel pump change and the vapor canaster change.near the fuel tank in the back..can you help me

Fuel sending unit is bad..its attached to the fuel pump canaster in your fuel tank....

Well it could be numerous if things but you want suggestions...So here's mine..Your gas tank might be vapor locked...This is caused from over filling your gas tank with gas over the years..Its when the pressure in your gas tank becomes greater than your fuel pump. It wont start until the pressure in your gas tank becomes lower then you fuel pump...Sounds crazy...This got me once...I didn't understand it...A lot of people (including me) Go to the gas station and get that extra 50 cent after the gas nozzle clicks off...over time that extra gas will run down the vapor lines intended to burn fumes....Like when you fill a gas can to cut your grass...If you sake the gas can it builds pressure and bows up. But with time that pressure will go away...Well saying that...Your gas tank needs to vent to....So your car burns not only gas but fumes...If you keep over filling your car with the extra gas it cloggs up your vapor canister intended for fumes or vapors...The gas will will go into that canister and clogg up the charcoal that's inside it. (Breaks it down) then the vapors can't get to your carburetor where it supposed to burns it. So what happens is the pressure in the gas tank becomes greater than your fuel pump and then car won't start..Are you with me? Lol Its crazy..Putting a different gas cap can cause the same thing...Simple test...When you open your gas cap to get gas.. Do you heat air sucking in.. Yes you can hear it....A lot of times loosening the cap let's the pressure out and the car will start right up.....Thus might not be your problem but worth telling at the gas pumps to other people..... Just trying to help

no such thing as vapor lock with fuel injection,need to check fuel pressure,running out of fuel is really hard on the fuel pump

Then the system is purging when it should not. when the system purges certain criteria needs to be met.Fuel vapor are forced to flow in the canister from the fill vent valve to the fuel liquid vapor seperator this isolates fule from vapor there the vapor goes to the canister the vapor from the canister is fed in to the intake manifold into the combustion chamber this according to the purge process. The solution is to monitor the purge control solenoid unless the cansitor is fuel soaked.

I f you are not getting any engine light - MIL light on the dash board . I would have the fuel filter changed . If this dosn't correct the problem then you have some kind of a problem with the fuel pump eighter electrical or a restrection with the EVAP system eighter the canaster vent valve or canaster purge valve . It is likely vapor lock in the fuel line or insiffent fuel delevery also check your gas cap the system needs to have pressure in it but also needs to vent at the correct times thus the canaster vent valve that sends fuel vapor to the purge valve to be burned at higher engine speeds from the fuel tank but it is a sealed system . Try the fuel filter more then likely this is the problem it should be replaced on a 5 year bacis as a rule and will damage the fuel pump if not done

this is becoming a common problem, what is going on with your car is that as you fill the fuel tank you have to displace the air inside the tank( as the fuel goes in the air has to come out ) this is done by the purge system, as the fuel goes in the air is displaced threw a purge canaster the canster trapes any fuel vapers that are in the displaced air and as you are driving the car the vapors are burned by the engine, this canister is either pluged or the valve that opens and closes the canister is stuck so as you fill the tank the air can not get out so you get back pressure in the fill neck and this causes the pump to shut off, bottom line you need to have the purge system checked. it might be a bad canister or a bad switch could also be one of the hoses to the canaster, heres the bad news to replace almost anything on the system the fuel tank will have to be removed and that can be expenceve....sorry

"Canister" usually refers to the charcoal canister. It's part of an emissions system called the evap system. It's a canister that contains a refined form of charcoal that absorbs evaporated gasoline from the fuel tank, and stores it until the computer opens a valve and it is burned by the engine.

sounds like your breather tube on your gas tank filler tube is clogged when you look at where you fill your tank youll see a little small hole next to the filler tube that is a hose that lets your tank breathe chances are it is plugged

You might have what is called vapor lock. The fuel gets so hot that it boils in the fuel pump or the lines. Do this test spay water on the fuel pump to cool it off . ( this only works for a few minutes before it gets to hot and vapor locks again ) If you can Keep the engine heat Off the lines and the Fuel pump it might help. If you have metal fuel lines near a heat source rap them with something such as rubber fuel line sliced down the middle to keep the heat off them If you are using an aftermarket electric fuel pump relocate it down low near the gas tank ( they work better pushing than pulling ) away from any heat source such as exhaust If your using the stock fuel pump try replacing it with a new one it might be getting weak Replace the fuel filter while your at it.

SOUND LIKE EVAP SYSTEM FAILURE.CAUSING EXCESSIVE FUEL PRESSURE VAPORS BUILT UP IN FUEL TANK.TAKE IT TO DEALERSHIP THEY HAVE TO USE DIAGNOSTIC EQUIPMENT TO FIX.THIS IS A LITTLE TRICK TO GET GAS IN TANK BACK OUT SPOUT A LITTLE NOT MUCH TO LET VAPORS ESCAPE WHILE YOU PUMPING GAS.YOU NEED TO FIX.FUEL PRESSURE VAPORS WILL BUILD UP ENOUGH TO BLOW UP FUEL TANK ESPECIALLY ON HOT DAYS.