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Gas Leak at High Pressure Fuel Pump

35K views 41 replies 22 participants last post by  DarrenBach  
#1 ·
I have a gas leak at the connection of the High Pressure Fuel Pump and high pressure fuel pipe. Gas drips and sprays out from the nut area (see pic). The car take a several seconds to turn over to start.

What is the most likely cause?

The car is out of warranty, so trying to repair myself without having to replace any expensive parts unnecessarily.
 

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#3 ·
You're passed 100k miles??? Maybe dealer would a good faith repair.

It looks like it should be a simple fix. I would definitely have a dealer or someone familiar with Hyundais look at it. I say this because it sounds/looks potentially dangerous. Hopefully it is just a simple o-ring.
 
#6 · (Edited)
I would challenge that. The fuel pump is not defective. This is a serious fuel delivery issue, plus the engine is more difficult to start. Emphasize that. That is a powertran problem. I can just imagine the lawsuit they would have if someone's car burst into flames. Would they not fix an oil leak? Is that not a powertran issue?

What the heck is a powertran warranty good for? Only the block and rotating assembly?
 
#5 ·
Replace the high pressure pipe.. PIA to do to.. has to be torqued using special socket..

The pipe is a 1 time use item, large bubble on end of pipe..
 
#33 ·
I had a valve cover leak a while back that was repaired under warranty so the high pressure fuel pump had to be removed and possibly the pipe too as it was probably in the way too. I put a mark on the tube before I dropped it off to see it they would change it and they left the original pipe. Should the pipe have been changed?
 
#7 ·
powertrain = engine and tranny, internally lubricated parts. Fuel delivery system is usually not included.

But i personally would send my concerns for safety up the Hyundai chain and make sure you get some kind of documentation from the dealer that you brought the vehicle in for service and they would not honor a good faith repair. Specifically have them list on the repair order that the customer states he is concerned for his safety. And also refer your case to the NHTSA. Likely you'll get nowhere, but in case the vehicle does catch on fire, you'll have grounds for a suit...
 
#8 ·
Above is correct, don't argue with them about what is covered under Powertrain as you'll lose that argument.
Goodwill repairs are typically done by dealers for regular customers who have been coming to them for service, you are less likely to get this consideration if you just come in off the street for the first time.
The high pressure outlet has about 1500psi of fuel pressure so you need to exercise extreme caution around it.
 
#15 ·
I had an axle seal leak on my Accent at 65k. They repaired that under the powertrain warranty. But the service writer implied it wasn't or she didn't know. They called Hyundai and fixed it under warranty.

They are crooked people those service writers. At the same time I complained about an engine miss and CEL under very specific condition that there was a TSB out on. They wanted to charge me $150 to apply the ECU flash for the fix. I declined and they did it anyway for free.
 
#17 ·
65,000 is out of warranty for a MIL concern.. TSB is just a document telling us how to repair a problem if we come across it, rather than replacing un-needed parts/time.. TSB is not automatic warranty repair.. under warranty, if TSB applicable to concern, then you better do the TSB procedure, otherwise they may/can bounce the claim..

You state MIL, like any other repair facility, they should scan and diag the concern, and then apply the proper repair as required, thus we have Diag charge and repair.. nominal charge for update if they want, or just do it while plugged in as a favor.. their call, as long as the tech is getting paid for the time involved.
 
#18 ·
You know what? Its not the consumers' problem that warranty repairs are a beaurocratic process. Do dealers and Hyundai have a CBA? In the end, it should be about the customer.

We spend a considerable amount of money on the vehicle. It should work as advertized. Am I wrong?
 
#21 ·
UPDATE: The short story is that the dealer found the issue to be the high pressure pipe as suggested by sbr711. Even though the part was out of warranty, they covered it at 100% ($440) due to the long story...

Long story is that while the car was under warranty 14 months ago, the car had the engine (short block) replaced. So when sbr711 noted that the high pressure pipe was a one time use item, I inquired if they had replaced it or just swapped it over to the new engine. They admitted that they just swapped it over. After speaking to the Service Manager and Hyundai US support, they verified that the official service manual required that the high pressure pipe not be reused and the dealer covered the cost.

A little research, asking questions and persistence pays off. Thanks all!
 
#27 ·
Glad OP is making out. I hate when a mechanic skimps out on parts like that to save a buck. A $2 part that can lead to another multi-hundred dollar service visit.

Good on the dealer for owning up to their mistake though. That is rarer than hitting the Powerball!
 
#35 ·
Can you report "Goober" to management for NOT following the proper procedures that could result in engine fires, etc.??
 
#36 ·
I am so glad I stumbled in here. I got my Sonata 2011 Turbo engine replaced under warranty about 12 months ago and in the last 3 or 4 days the same exact problem OP had is happening to me with the high pressure fuel line and the nut spraying gas in the exact same spot that OP's red arrow in the photo is pointing at. Hopefully the dealership can print me out a copy of the receipt cause I didn't keep it :(
 
#37 ·
I'm sure they will fix this free for you...they have enough bad publicity with car fires! They can not reuse the connector, it is one-time...also they don't take the bracket off the old motor hence, it may not be there!
 
#39 ·
#40 ·
Yup. But Hyundai is the cause of this since they pay next ro nothing for labor on warranty/recall and not making sure that the techs were replacing the fuel delivery pipe during engine recall.

Just Santa Fe in for this (our recall is #180) and it took 4 hrs... to do an inspection. Chalking it up to crappy warranty pay from Hyundai and sheer number of cars to be checked

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