After any service, they should engage within the first 1/8 to 1/4 of travel and be firm. Not soft and no sinking after pressing hard.
Yes, listen for any abnormal noises. Windows down, radio off etc. After it warms up I would do a few harder accelerations and note that it does not stumble and pulls steadily while accelerating. Then let off the gas rapidly and it should slow normally, no exhaust popping or other jerky behavior.
Make sure the check engine light turns on with key in āonā, but engine not started. Then make sure it immediately turns off once the engine is started. Its a good idea to also ask your shop to double-check that all the readiness monitors are in the complete state. Incomplete readiness monitors will often prevent cars from passing emissions testing, and can mask a lurking problem.
I just spent 3 months to fix P0017 problem, now it fixed. Share my story not only to you but also anyone have same issue. As you spent, I changed solenoid, crankshaft sensor so also spent about $1500 which is not worthwhile. I think for most p0017 just oil change problem, tricky thing is Kia/Hyundai these brand if you have more than 100k mileage, you should change it every 3750 miles according to an experienced engineer. And donāt forget to erase code and run few mile to see if code still pops out.
After first step change oil if it still there, yes we can test vvt in/out solenoid and crankshaft/camshaft sensor but ask shop test it first instead of replace it. Can save money for unnecessary cost. And more important, if they choose to replace it ask them perform relearn process after they put new parts. What I learned here is, the technician at Kia store are shit. They know less than what I learned from website, what they only have is only work protocol sheet. I fixed problem by myself in the end. They even asked $4000 to open engine to check timing belt without knowing anything.
So what you are saying is just change your oil and problem solved??? Rather it may or may not require any other partsā¦
You shared a lot of things but never did share how YOU fixed it yourselfā¦ After 2 post about itā¦ lol
BTW Welcome to the forumā¦
Yeah I will definitely agree the kia techs were not the best, especially where I went. But my check engine light was on for a long timeeeee, I suspect I had p0017 code for awhile, and I had multiple oil changes and it never went away. But yeah should always try an oil change first 
Hadnāt heard anything bad from you about the last pick up from the dealer that you posted about, did they finally get it fixed for you??
Yes finally! I had the timing chain and components (tensioners etc.) replaced, seems to run alright now!
To make it clear, I brought it to store because some engine noise, from now I would say oil change more than 4000 miles is the primary reason, Kia/Hyundai carās engine oil become dirty after only ~3500miles. But they didnāt fix that way, and change solenoid/sensor directly but light still on, same noise.
I followed some peopleās advice do a oil change, it sounds good and ran well but engine light still on. I brought it back to store, they canāt fix it and told me need spent $4000 to check engine timing things. Then I start did more homework on YouTube, it mentioned relearn solenoid/sensor after putting new on. So I go a store and relearned it, and erase the code, after few days test, it didnāt come back.
How much it cost? I can tell I probably have to replace it one day in the future.
Around $3000 Canadian
Not too bad. They asked at least $4000 usd
Good advice. I hold to the repair philosophy it is best to replace parts only after testing confirms they are faulty. Not on a ācould beā. With todayās modern cars, full of computers, actuators, and sensors, its very easy to run out of money before running out of ideas what to replace next. The other problem with overly -zealous parts replacement, the replacement parts may be significantly lower quality than the original.
Common problem these days. Modern cars are rolling computers. Todayās mechanics have to be both a nuts and bolts tech, and a computer tech. thatās a hard combo to find in the same person.
Reminds me of famous physicist Robert Oppenheimer. His college advisors noticed he had an excellent understanding of the theory but had no interest in learning how to do the experimental parts. Couldnāt even solder two wires together. This presumably was b/c he was brought up in a privileged family, so when something broke they just bought another one, he never needed to fix anything himself.
Everyone has preferences. When my job was large enough that I needed an assistant, I always had them work on integration activities. I preferred planning and testing. Even with testing, I didnāt want to work on setup, just data analysis. I could do all the work and had done so for 25 years in my last career, but being the boss I had choices of what to do.