Our Santa Fe runs smoothly with no problems except immediately after a fill-up, usually from about 1/8 tank. Frequently it is hard to start right after filling the tank but after 3-4 tries does start, but runs rough briefly then smooths out after that. It's kinda unnerving!! Any ideas what's up?
It looks like your fuell tank is puting in to vacuum after filling try to start after you filled up with out closing the tank cap just to see if the problem is there if not its vacuum problem and you have to check your air intake in the tank
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sound like problem with the EVAP SYSTEM.HAVE CHECK OUT. trick to pumping gas dont stick fuel spout all the way in hold it back a little then pump gas the gas vapors stored in fuel tank stopping you from pumping gas.hold spout back pump gas.
it was running then you removed the gas cap to fill ( extremely dangerous practice with car running)
that indicates that there is a problem with the EVAP system.
run the fault codes ( what the dealers should have done first ) and check for the EVAP codes , purge vent or solenoid problems
The most common cause of this is thermal shock (gasoline is very cold out of the ground) to the electric fuel pump inside the fuel tank, when the pumps get worn the decrease in temperature from the gasoline causes the pump to stick. This is a question I see fairly often, so I did research to see what the common cause is. Next time this happens have the fuel pressure checked.
Just helped a friend fix this exact same issue on his 2004 hyundai santa fe. Replaced the purge control valve - a $39 part, even from the dealer. Had to get our hands dirty, but it took literally one single hour to replace the part. Filled it up immediately afterward and no more starting problems. Part is located directly behind the manifold - top, rear of the engine compartment - just between the engine
My educated guess is that the purge control valve is stuck in the open position. This valve is part of the emissions system on your Santa Fe and normally is closed when the engine is turned off. If the valve sticks open, fuel vapor gets pushed into the engine when filling the fuel tank. This creates a fuel mixture that is too rich on the next start up.
Hi, this could be down to the fuel line and injectors being dirty as at low revs their is less pressure forcing the fuel through. My first thing to try would be to buy a fuel cleaner that you pour into the fuel tank these tend to solve the problem your having. Make sure you buy the correct one ie petrol or diesel follow instructions on the bottle for amounts to use then run the car for a good run usually takes about 4 hours of driving time to fully clear all fuel lines and filters. I use this in my car once a month as you can pick up small traces of dirt from filling stations this then clogs up over time. Hopefully this will solve your problem if not then give me a shout back and ill assist you further
These fuel tanks are designed weird, they have a hump in the middle for the driveshaft. Most of the time I have found if the pump clicks off early it is the fuel vent valve, which is located on the rh side, but a fuel cut valve could do the same thing. If the pump clicks off early (sometimes after 1 gal), make sure the canister filter isn't clogged and replaced the vent valve.
not sure it should happen that fast but it may.... buy yourself a couple bottles of gas line antifreeze and put them in the gas tank... sounds like you have a lil water problem ... this stuff is basically alcohol (not the kind you drink) and it will suck up the water.