High Pressure Fuel Pump

[Volfy]

HPFP failure is not uncommon with the Theta II 2.0T apparently. Knock on wood... our G70 and Stinger have no problem so far, although every once in a long while (a few months?) would crank for a few seconds before firing up the engine, which I would have to guess is caused by engine waiting on fuel pressure.

Brand new OEM HPFP is about $400-450. Not cheap, but not super expensive if I ever have to fix one out of warranty.

 

[Gene Purser]

Wife's 2019 G70 w/2.0T left her stranded on Aug 4. Genesis immediately towed it to the dealer. Web page showed codes #4 cyl misfire and two O2 codes. Next morning service advisor called and said that the fuel was contaminated with diesel and to call my insurance company. I told her that it had been two weeks and 200 miles since the car was fueled at an unleaded pump. Contaminated fuel usually shows up within a mile or two. I called my insurance company and he was to send someone to take a fuel sample and have it analyzed. I didn't hear anything until Aug 16 the service advisor called and said that warranty was going to fix it and gave a hurried list of parts ordered: High pressure fuel pump, injector, spark plug, coil pack, etc. Six thousand miles ago the car misfired momentarily two times within a couple of days, then set an O2 code that turned out to be a catalytic converter. It took them more than a month to get the part and fix the car. They didn't do anything to fix the mis fire problem because it didn't set a code. I told them then I would be back because of the symptoms both times. If this car is representative of Genesis reliability and dealer quality, I doubt Genesis will be around long. Eighteen days into this with no end in sight and no mention of a loaner car from the dealer. 29,300 miles on the car now.

 

[JCtx]

You know, from the reliability standpoint, if that was all both my 2022 Santa Fe Calligraphy, and 2023 G70 2.0T have in 30K miles, I'd be delighted. Ha ha. Ever since COVID, vehicles are crap now. And yes, dealers and service too, due to the lack of competent techs/dealers. Or even techs at all (there's a huge shortage). Your issues were minor, but they can turn into a PITA, like in your case. I feel the list of things wrong with both of my vehicles will be longer than yours by 30K miles, but hope to be wrong. Lots of engine, transmission, infotainment, etc. issues left and right, and not only with Hyundai/Kia/Genesis vehicles, but all others as well. And things probably won't get better until 2024.

As a final note, I was very disappointed there's no scanner for my 2023 G70; not even the $500+ ones (plus $80 yearly for the software). I'd have to buy the multi-thousand dollar unit dealers use, which of course I won't do. So there's no easy way to work on these vehicles now. I can only do basic maintenance, which I'll continue doing. At least we can be notified of any codes via BlueLink (for 3 years), but there's no way to erase them ourselves. Hope the G70 doesn't let me down, with its old chassis, engine, and tranny, it should be well proven by now. The SF is a different story. Hyundai, with all its wisdom, thought it was a good idea to put a freaking DCT tranny on a family SUV, and they're failing left and right. Plus the 2.5T is only a year old (had to wait a month more for another SF to clear the last turbo oil line recall on 3/27), so probably not the last. At least the infotainment is still the old version (same as the G70), so hopefully no issues there. I really like both vehicles, so hope to be able to keep them for a long time, for a change .

 

[Gene Purser]

Two time consuming vehicle repairs in 3 yrs. The emissions warranty won't last forever, then they will be looking for me to pony up for those expensive repairs. One more issue and it'll be repaired and gone. This is the first time I've ventured out of Toyota/lexus land in many years. My wife drives this car. I've come to expect reliability.

 

[JCtx]

Yep, we all expect it, but was just being realistic that it's probably not going to be there, at least like before. I also bought many Lexus (all V8s) vehicles, and no issues initially with the SC400 and GS400, but had engine issues with the LS400. Laid off the brand for a while, and came back with the SC430, and it had a horrible transmission, so sold it relatively quickly. My last car was the RC-F, and it was the worst of all, with the engine sounding horrible on start-up (deemed normal), super noisy (something I didn't expect from a Lexus), rattles everywhere, and a really rough (yet wallowy) ride, so also sold it quickly. And no, couldn't test-drive either of those 2 last cars, unfortunately. And now they're even uglier than before, so no more Lexus for me. Their service was horrible too, the handful of times I had to take them in. I've had similar experiences with all other brands, so what still keeps me with Hyundai/Genesis is the warranty; at least they're putting their money where their mouth is. I honestly don't know what to try next. And ALL other current Genesis models make me feel like I live in a nursing home (ha ha), especially those ugly as sin steering wheels, so at least for the foreseeable future, this 2023 G70 is my first and last Genesis. I sincerely hope I don't have to buy another freaking vehicle in a long time, but we'll see. By the way, I'm done buying expensive vehicles; they're just not worth it anymore. At least not to me. Both the Santa Fe Calligraphy and G70 are as much as I wanted to spend, and have everything that is really needed.

 

[Volfy]

While reliability is fairly predictable statistically, it is much less so when the sample size reduces down to individual ownership. If my count is correct, our Stinger and G70 are the 7th and 8th Hyundai/Kia/Genesis we've owned... since 1999. Haven't gotten stranded in any of them... not even once. Come to think of it, I can't remember ever gotten stranded by a breakdown of a vehicle I owned. Not one that can be blamed on the mfr under warranty anyway. In fact, because of the longish warranty, we tend to hang on to our Hyundai/Kia/Genesis far longer than other brands of vehicles we've owned.

That said, the last Toyota we had, a 2004 Sienna, did suffer an A/C malfunction on the way back from a Summer road trip. We ended up driving back overnight, with windows rolled down, for some 8hrs. That was no fun. Deserved or not, that kinda of experience did leave me with a bitter taste for the brand, so I can certainly understand folks who had problems with any car, of any marque... regardless of what statistics say.

 

[Gene Purser]

Yep, we all expect it, but was just being realistic that it's probably not going to be there, at least like before. I also bought many Lexus (all V8s) vehicles, and no issues initially with the SC400 and GS400, but had engine issues with the LS400. Laid off the brand for a while, and came back with the SC430, and it had a horrible transmission, so sold it relatively quickly. My last car was the RC-F, and it was the worst of all, with the engine sounding horrible on start-up (deemed normal), super noisy (something I didn't expect from a Lexus), rattles everywhere, and a really rough (yet wallowy) ride, so also sold it quickly. And no, couldn't test-drive either of those 2 last cars, unfortunately. And now they're even uglier than before, so no more Lexus for me. Their service was horrible too, the handful of times I had to take them in. I've had similar experiences with all other brands, so what still keeps me with Hyundai/Genesis is the warranty; at least they're putting their money where their mouth is. I honestly don't know what to try next. And ALL other current Genesis models make me feel like I live in a nursing home (ha ha), especially those ugly as sin steering wheels, so at least for the foreseeable future, this 2023 G70 is my first and last Genesis. I sincerely hope I don't have to buy another freaking vehicle in a long time, but we'll see. By the way, I'm done buying expensive vehicles; they're just not worth it anymore. At least not to me. Both the Santa Fe Calligraphy and G70 are as much as I wanted to spend, and have everything that is really needed.

Sorry you had so much dissatisfaction with Lexus. We've had a LS460 for 12 years and have been really satisfied. We're upper seventies, so comfort and reliability reign with us.

 

[JCtx]

Back then the LS400 was on a league of its own IMO, and my wife really liked it (I bought it for her). And I did as well, especially for traveling. And the Nakamichi audio was also much better than anything else available at the time (it was fully optioned). It had about 15K miles, when the engine started knocking randomly (tac.....tac.........tac.tac...tac....etc), even though I always changed the oil at 5K-mile intervals, and with Mobil1. Didn't want to go thru an engine replacement, so traded it in. Really wish there was a quiet car like that, but in a small size, like the G70. Unfortunately, no such thing. Will always miss that. And an LS is a whale now (not to mention super ugly), and don't need nor want that size, especially with current gas prices, and their ridiculous cost. So what we have now is pretty much at the top of what you can have in those sizes (SF and G70), taking into account reliability and warranty. The bad news of having more and more electronic crap and complication is reliability suffers, but it is what it is. Finally, I think the LS460 version you have was probably the best, so it was a smart decision to keep it. It's probably more reliable than anything available now.

 

[Kimsum]

My 2019 G70 2.0T needs a new High Pressure Fuel Pump at only 36,000 miles. I find it to be unusual so early. All of the regularly scheduled maintenance has been done by the dealership. No mods, as car is completely stock. Has anyone else experienced this problem?

Yes, I experienced the same thing and now that my car is at 66,000 miles I'm having to have it replaced again. Except this time since it went bad it messed up my catalytic converter, fuel injectors, fuel injector harness, flooded out my spark plugs, and mixed fuel with my oil. Thank God I purchased the extended warranty because it's covering the cost of everything except the oil change and tune up which is needed since my spark plugs got messed up and the fuel mixed with my oil. Once all work is done then they're going to check to make sure my engine was not damaged in the process

 

[JCtx]

The HPFP is driven by a cam, so my guess is something is not perfectly aligned, and wearing something (a seal?) prematurely, since it has failed twice, and at about the same mileage. Doubt a tech can do anything about that, but mention it anyway. Good luck.

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[markgill]

If it failed I’m assuming you were left stranded? This is my first GDI engine but have not heard folks here with a systemic problems with the HPFP. Did you get an engine code when it failed on you?

Mine went out last week at 100k it will give a. Code p0087 usually. Mines did. Took it dealer they replace dl high pressure fuel pump, and intake manifold

 

[yapanel]

I have 2019 g70 2.0T and having the same fuel pump problem. Is this covered under warranty? the dealers are giving me appointments that are a month out! not sure what to do. I tried calling the genesis customer care and they said they could not get me an earlier appointment.

 

[G-34362]

My 2019 G70 2.0T needs a new High Pressure Fuel Pump at only 36,000 miles. I find it to be unusual so early. All of the regularly scheduled maintenance has been done by the dealership. No mods, as car is completely stock. Has anyone else experienced this problem?

My 3.3l 2021 does the same thing at 17000

 

[JCtx]

May I ask how the HPFP craps out? All of a sudden? Or first have starting issues, like cranking too long? That happened to my G70 twice already, but happened randomly, and after sitting for about an hour. Even after 3 weeks of sitting, it started right away. The only 'issue' with mine at the moment is a hard brake pedal after a day+ of sitting, so there's a slight vacuum leak somewhere, but it doesn't affect anything, other than just the annoyance of having to press hard to start the engine. But no biggie. It happens to tons of vehicles, and finally happened to one of mine, so it was about time. Ha ha.

 

[rxm3d1j]

My 2019 G70 2.0T needs a new High Pressure Fuel Pump at only 36,000 miles. I find it to be unusual so early. All of the regularly scheduled maintenance has been done by the dealership. No mods, as car is completely stock. Has anyone else experienced this problem?

I’m having the same issue, just wondering if it will be covered under the warranty. I have a 2019 Genesis g70 2.0 with 43,000 miles on it

 

[JCtx]

It should, since it's 5 years or 60K miles, and you're below on both counts. Good luck.

 

[G-655641]

I am currently experiencing this myself. I started having issues at 59k

 

[tutiehernandez21G70ELITE]

Wife's 2019 G70 w/2.0T left her stranded on Aug 4. Genesis immediately towed it to the dealer. Web page showed codes #4 cyl misfire and two O2 codes. Next morning service advisor called and said that the fuel was contaminated with diesel and to call my insurance company. I told her that it had been two weeks and 200 miles since the car was fueled at an unleaded pump. Contaminated fuel usually shows up within a mile or two. I called my insurance company and he was to send someone to take a fuel sample and have it analyzed. I didn't hear anything until Aug 16 the service advisor called and said that warranty was going to fix it and gave a hurried list of parts ordered: High pressure fuel pump, injector, spark plug, coil pack, etc. Six thousand miles ago the car misfired momentarily two times within a couple of days, then set an O2 code that turned out to be a catalytic converter. It took them more than a month to get the part and fix the car. They didn't do anything to fix the mis fire problem because it didn't set a code. I told them then I would be back because of the symptoms both times. If this car is representative of Genesis reliability and dealer quality, I doubt Genesis will be around long. Eighteen days into this with no end in sight and no mention of a loaner car from the dealer. 29,300 miles on the car now.

My Husband and I bought a 2020 G70 2.0T Elite A-T RWD for her high school graduation present(she was 16, worked full time, cheerleader, straight A's, every sport played, & it counted as B-day/X-mas gifts til paid off!). We spoil her, but she's not spoiled. Nah, we reward her for hard work, just like life does/should! I being a work from home mom and not very mechanically inclined am just starting my self education in these topics.

My husband however is the type that does not allow anyone to do any work/maintenance on our home, boat, cars, trucks, appliances, IT/electronics, or anything else( he tries to do our own medical as well, & he's not to bad either). Her G70 has about 35,000 miles currently, and we've had no problems until about a month back. She was on empty, showing 0 miles left and put 3/4's tank in, not 3 miles from the gas station car started running terrible, and had no power.

Stranded on hwy. waited a bit and started it back up. Sounded almost normal at idle, but when she started to drive off it came back. At a blistering speed of 2-3 mph she got it back to the house. Called dealership, and they towed it in( the hubby was working or he would not of let it go w/o a fight). A week goes by and dealership clears code(which I do not know), we get car back, runs ok for half a day, and now won't move under it's own power!!!

Totally pissed at dealership(GENESIS OF WILLOW PARK, TEXAS and hope y'all see this!!!)! Now that I know what my husband always knew, was that they are totally incompetant at service and good at sales! He said that it was surging under load, slight rough idle, fuel/air mix is way too rich and dies when throttled even gently. He said that it is gonna be one of these items thats the cause; bad fuel, fuel filter, fuel pump, fuel pressure reg., or the worst for last catalytic converter. he also said it could be a rare and less likely issue like smog pump related vapor lock situation not allowing fuel pressure sending unit to work properly.

With most things there is an abundance of pics, vids, sites, and DIY's on the web to kinda get an idea of where to start. Not Genesis, and that is why I'm here and after spending half a day reading, I am better for it. Just want to say, that I think its wonderful how Y'all help each other, and work through your car problems to come up with answers. On other forums that primarly have women using them, are full of drama, hatefulness, and are rarely helpful! Thumbs-up to y'all doing your best and it's a breath of fresh air! Now back to my Question, do y'all agree with my husband? 99% of the time he's right. Thanks

 

[Volfy]

She was on empty, showing 0 miles left and put 3/4's tank in, not 3 miles from the gas station car started running terrible, and had no power.

The fact that the trouble started after the car ran empty on fuel should have made it painfully clear what the cause was. In additional to the HPFP (High Pressure Fuel Pump), there is another fuel pump that is inside the fuel tank itself. That low pressure fuel pump pushes the fuel to the front of the car, where the HPFP increases the fuel pressure require for direct injection. The in-tank fuel pump is cooled by the gasoline that surrounds it, so if the fuel tank is allowed to run to empty - or even to very near empty - it can be damaged. That appears to be what happened to her G70.

In-tank fuel pump: Genuine Fuel Pump Assembly for 2019-2021 Genesis G70 | Part# 31110-J5000 | Hyundai OEM Parts Direct

In-tank fuel pumps are actually quite common for MPI and GDI engines. For this reason, you should never run the fuel tank to near empty. I rarely run my vehicles past 1/4 or 1/5 tank left.

I dunno if the HPFP can also be damaged when starved of fuel. I would hazard a guess that it too does not like to run dry.

 

[JCtx]

Two things. First, it's never good to let fuel almost run out on modern vehicles, so hopefully your daughter learned that lesson (another lesson is to always fuel at high-traffic gas stations, and preferably top-tier ones). Second, the issue started after refueling, so unless you strongly believe in coincidences (ha ha), it most likely had something to do with the fuel. And if that's the case, it wouldn't be the car's (or Hyundai's) fault. Bad fuel (including water on it), would cause those symptoms, so I'd eliminate that possibility first. If you let a dealer do everything, and it turns out it wasn't a warranty issue, you'd get slapped with a hefty bill. But the cure for really bad fuel is to drain everything, including purging the fuel system from tank to as close to the injectors as you can, and it's not going to be easy or cheap. So hope it's a warranty issue, to avoid having to pay anything yourself. Good luck, and keep us posted.