[Pumbaa]

Alright, as the topic says, went to replace the fuel filter on my Elantra. Not a simple job, but I did exactly as the Elantra Shop Manual stated. Here are the steps:

Remove rear seat cushion
Open access cover to Fuel tank
Disconnect Negative from Battery
Disconnect wiring harness from Fuel Pump assembly
Reconnect Negative to Battery
Start the engine and allow it to die on its own. *This removes fuel line pressure*
Remove screws holding Fuel pump assembly in tank
Remove hoses connected to fuel pump assembly *watch for spilled fuel*
Remove fuel pump assembly from tank *Use a towel to avoid spilled fuel*
Remove clips holding fuel filter into fuel pump assembly
Replace fuel filter and reassemble fuel pump
Check for fuel leaks

Thats it. LOL sounds simple, it was until I got to pulling the fuel pump assembly out. The Shop manual, its whole 480 pages of fuel system, only has 5 pages related to the actual fuel system and 475 pages of electronics diagnostics for the Fuel injectors. What a waste. There were no pictures to help with this replacement in the filter replacement section. And the picture of the fuel tank blow up only show the fuel pump assembly but doesn't break it up. So its worthless when trying to pull the dang thing apart.

Ok So I replace the filter, reassemble everything in the order I took it apart. reconnect the battery. Get in the car, turn the key, and it just cranks. So I turn the key to ignition on, but not to start to hear for the fuel pump activating. Sure enough I hear it come on, so I turn the starter. Still nothing, just cranking. Try that 10 times... Still nothing. So I call the dealer just to see if a tech can help me out. He said try it 5 more times, if nothing, then pull the fuel line just before the fuel rail, then crank it and see if fuel comes out. So I try, this, and yes, fuel comes out. Meaning there is pressure coming from the fuel pump.

So here I am, stuck. I pulled the fuel rail and injectors loose to see if any fuel is being released by the injector. Crank it, nothing comes out. I pull the spark plug on the #4 cylinder to check if its flooded. Nope dry as dry can be. No odd coloring. So I spray some carbrator fluid in all four cylinders, just to see if I have ignition. LOL And to also see if combustion can make some vacuum to start the injectors. Engine cranks, starts for 5 bangs, then stops. So I got spark, but not fuel from the injectors. Next I'll try some starter fluid see if that works. Anyone have any suggestions why I'm not having any luck?!?!

 

[evan938]

how long did you have the assembly out? when i put in my 190lph pump and went to put the stocker in after a couple months, it did the same exact thing youre saying. bought a fuel pump from another guy, same thing. basically, if the pump is out of the fuel for more than a few hours, the seals will go bad, and it wont work. i was getting fuel to the rail, could hear it priming, but nothing. your best bet is to just pick up a 190lph pump from ebay (90-100$ shipped) and put that in. a stock pump from the dealer will cost 2-300 (that was the price i got from sed)...unless you got someone around you who is upgrading and wants to trade straight up (like i got lucky w/ dave and his nitrous needing a 190) youre going to be needing a new pump. dealership will probably deny warranty since you worked on it. if you werent 3k miles away, i could help you out

 

[Keyan]

why would the seals go bad if it's out of the tank for a couple hours?

drys out?

and how would the seals go back stop the injectors from pumping?

 

[evan938]

I didnt ask about how it would keep the injectors for working. but thats what the guy told me. like i said, i was getting fuel to the rail, and could hear the pump prime, but it wouldnt start. it just keeps cranking and wont turn over

 

[southpawboston]

tirolerpeter over at EC replaced his fuel filter, and i don't think he went through the step of cranking the engine to remove fuel line pressure. could it be that the fuel line needs "priming"? i'm not sure if that even applies to fuel injected cars anymore, but that used to be a problem with carbureted cars...

 

[evan938]

i primed mine before i started it...turned the key to ACC...you will hear it real loud at first, then after putting it to ACC 2-3 times, its fine. then again, i didnt relieve any line pressure. i removed the rubber hose (doesnt leak) and then i just got a little cup and pulled the line in the center and let it drain into the cup. it leaked about 3oz, but i still wanted to make sure there was fuel in the line before starting it. im telling you, the fuel filter is shot. unless you only had it out of fuel for an hour or so, youre probably going to have to replace it.

 

[Pumbaa]

Alright got to it this morning and fixed it. I kinda feel dumb, but I'm sure I'm not the only one that had this happen. There was an o-ring on the original filter that I missed.

It fits right here

I installed it and put everything back together again. Turned on the ignition and the fuel pump came on. It started out with a higher pitch and then it got a little deeper. So I recycled the ignition until the sound became the same tone. Then I Turned the key, the engine cranked over 2 times and vroom, the engine started right up. So I found the pitch change was the sound of the fuel line pressurizing.

Below is a picture of the fuel pump all torn apart so that next time someone tries to replace the pump and can't find a good picture here it is.

 

[kwasar]

Alright got to it this morning and fixed it. I kinda feel dumb, but I'm sure I'm not the only one that had this happen. There was an o-ring on the original filter that I missed.

It fits right here

I installed it and put everything back together again. Turned on the ignition and the fuel pump came on. It started out with a higher pitch and then it got a little deeper. So I recycled the ignition until the sound became the same tone. Then I Turned the key, the engine cranked over 2 times and vroom, the engine started right up. So I found the pitch change was the sound of the fuel line pressurizing.

Below is a picture of the fuel pump all torn apart so that next time someone tries to replace the pump and can't find a good picture here it is.

Any chance we can get these images posted again? The original links are no longer valid.

 

[mlumz]

Don't have any pictures. Just make sure you transfer all the "O-rings". Double and triple check because there a few hidden below the filter.

 

[kwasar]

Alright got to it this morning and fixed it. I kinda feel dumb, but I'm sure I'm not the only one that had this happen. There was an o-ring on the original filter that I missed.

It fits right here

I installed it and put everything back together again. Turned on the ignition and the fuel pump came on. It started out with a higher pitch and then it got a little deeper. So I recycled the ignition until the sound became the same tone. Then I Turned the key, the engine cranked over 2 times and vroom, the engine started right up. So I found the pitch change was the sound of the fuel line pressurizing.

Below is a picture of the fuel pump all torn apart so that next time someone tries to replace the pump and can't find a good picture here it is.

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Is there any chance you could repost these images? I'm having the same issue, car won't start. I think I got all the o rings and washer, but I can't find anything online to be sure . . .

Thanks

 

[kwasar]

-

Is there any chance you could repost these images? I'm having the same issue, car won't start. I think I got all the o rings and washer, but I can't find anything online to be sure . . .

Thanks

Got through it. I'm going to post this here so anyone in the future who needs to replace a fuel filter and/or fuel pump gets though it the first time.

Never run a pump dry, the "bucket" that holds the assembly needs to be filled with gas *before* you crank the engine. You may get lucky, but the instructions on the new pump assembly were big bold type, fill tank after installation. That's how is self primes. Gravity spills gas into it, simple as that. Also, if you replace your filter it's recommended you change the pump. Alot of pumps die from gunk unsettled when removing the old filter. They are made to last as long as each other. I guess you could compare it to replacing only one strut.

There are 2 white washers and 2 black orings on the top. I couldn't find one of the white washers the first time I had the assembly out of the car. But after my car would not start, I triple checked everything. I used a screw driver and rubbed the inside edge of the top inlet. I took a bit to get that last one out, and on an old dirty filter it's very hard to see.

Here are images of the o-ring found on the bottom of the filter: