Engine Light Is On My ’04 Hyundai Accent
Posted in Ignition Systems | Asked on Jun 6, 2010
If I fill my tank, lights on the ad. some point the light is switched off, as I deplete the fuel, but it lights up every time I fill it with gas. It also injects idle, weather in the park or drive, and especially after I fill the Tank.Die OBD scanner, said misfire in cylinder 4 So it can not be, because fuel pressure is 4 in the first place to get in on the rail and fuel is a final and works well. I replaced all spark plugs, cables, and even the ignition coil (distributor-ignition). I have also replaced the gas cap and # 4 of the injector. It is not the timing, because that would cause misfires in all cylinders. The fuel filter is part of the fuel pump and does not look bad, plus I would need the whole pump (200 + dollars to replace). But as I said before, it may not be fuel pressure. Please help, because I take all the resources of the brief it is exhausted to the Hyundai dealer. I did not have much money to keep throwing parts in it. Please help!
There are 8 Answers for "Engine Light Is On My ’04 Hyundai Accent"
drive it till it blows up. it will do that sometimes if you leave it running when you put gas in it
Probably would have been cheaper just to take it to the dealership! I think that’s the only way to get it running right! Bite the Bullet!
try buyin some fuel injector cleaner at auto zone. 1 bottle of the fuel cleaner in with a full tank of gas. itll clear out ne build up
Sounds like you have an intermittent electrical short with the gas fuel Gage and accessories circuit(s) Have you recently installed or messed with your car sound system? Sometimes wires get loose or crossed and cause intermittent problems with your accessories.
check fuel cap or replace it
number 4 mis fire will be bad injector or bad coil pack
or bad wire or spark plug
there is a product called sea foam its available at walmart and most parts stores dump it into your gas tank and it should clean out any deposits or debris in the fuel system it sounds as if the injector to that cylinder is clogged up has restricted flow through the injector itself or is bad. another great product is engine restore they have 3 different sizes for 4 6 and 8 cyl engines you just dump it in your oil with an oil and filter change and it will fill in the tiny scratches in the cylinder walls increasing compression and making your car run better, i swear by it along with valvoline max life motor oil usually 5w30 and a fram tough guard oil filter. only other thing you could try (you didnt say what kind of plugs you got) but try the bosch platinum 2 or even the platinum 4, they don’t have to be gapped and perform better than standard plugs also last longer and produce a more powerful spark. hope that helps and good luck.
It could be your fuel recovery system is vapor locking causing too much suction.In which a mechanic has to determin regardless.SORRY! Call around, some places will look at it without charging.
Your system is pressurized from the fuel pump to the injector rails. This requires a certain PSI in order for the injectors to open up. When you open your gas cap the pressure reduces itself and then the fuel pump ends up working overtime trying to bring back the pressure back to the rails while the engine is running and reducing the pressure.
If i am not wrong there is a port on your fuel rail which looks like the end of a tire valve stem. If you have someone with a pressure gauge..not the tire type but the kind which has a flexible hose attached to a gauge with a dial on it…..<– you might be able to rent one at your local auto parts store. You can screw it into this port and run your car. The auto shop should be able to give you what the Hi PSI and low PSI requirements are supposed to be for both when the car is running and when you shut it off.
When you shut off the car and the pressure drops dramatically while doing the rail pressure test than you could have a bad one way valve located somewhere where the outgoing return line goes out to the tank. Its supposed to hold the pressure at the rails while the fuel pump holds the correct pressure on the intake side.
Also there is a two way valve hooked onto your gas tank. To the right of the fuel pump is a 3/8th hose running into the tank. Along that hose there is a two way valve. At the other end of that valve on the other side of the fuel pump it is connected to the fuel shut off valve. Disconnect that hose and check the valve.
Before you do any work don’t forget to remove the “negative” battery cable and remember to reduce the pressure in the fuel rail so when you remove hoses at the tank you don’t get hit with an 80 psi blast of gas.
BTW, The fuel pressure regulator is located inside the fuel pump. Its one piece. If your not comfortable with this then bite the bullet and let the shop deal with it. At least you have an idea now and you won’t feel like your getting ripped off.