Fuel filter help 2000 hyundai elantra
 

Hi All,
my partner and I recently replaced our fuel filter on our 2000 Hyundai elantra. That same day we drove around all day with our son and went to get our engine codes checked because the light had been on previously. The code just read about a misfire in the 1st cylinder.

It said nothin about the fuel filter. We filled it up with a few gallons of gas and went home. The next morning, my partner turned on the car to warm it up before he left for work and 10 minutes later went to leave. We noticed this horrible fuel smell and he look under the hood to find the fuel filter leaking out of the top!

We haven't found any damaged hoses(top and bottom-metal hoses that connect to the filter) or any damage on the nipple, or O-ring hugging the nipple. We have taken it out and put it back on to make sure it was correct but it's still leaking horribly.

Wondering if you have heard of this? We are going to take it in for professional help when we can. Also it was
Completely fine that day and we drove it all day then the next morning it just starts leaking?? Weird!

This solution may help for you....

Chances are the fuel filter is not going to be your problem. If your fuel filter is plugged up, then you will have low fuel pressure under a load when the fuel demand is at its highest and the engine will bog down under full throttle. If this does not happen, your fuel filter is going to be OK. I have never come across a fuel filter that will clog and then unclog. Once it is plugged up, it is plugged up.

To check the fuel pressure regulator, it does not require any tools. Just pull the vacuum line off of the regulator and see if there is any gas in there. You can even turn the key on to prime the fuel system to see if any fuel leaks out of the regular while the vacuum line/hose is removed. If you see any gas at all come out of the regulator, the regulator is bad and will need to be replaced.

Hard starts usually are fuel pressure related.. but if you have replaced your fuel pump already, just be sure that your fuel pressure checks out about 44 psi key on engine off and when cranking and does not leak down when the engine is turned off.

If all checks out, then chances are you just have a bad camshaft or crankshaft position sensor. This is very common on these motors. These sensors go bad all of the time causing all sorts of issues including your hard start issue.Some other things it could be would be a bad engine coolant temp sensor or even a bad mass air flow sensor.