Go Back   MyHyundaiForums.com > Sonata Forum > Sonata 3rd Gen (EF)
Forgot Password? Join Us!

Sonata 3rd Gen (EF) Sonata 1999 to 2005

Reply
 
Thread Tools Display Modes
  #1  
Old 02-06-2010, 01:30 PM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default Engine start after shut down for refueling

Greetings,
I have a 2.7 2004 Sonata, after stopping for gas after a 1 hour ride from work I am experiencing trouble starting. The engine cranks for a much longer time then when it's the first start of the day, and after it starts, it immediately stalls then takes about three tries before it will stay running, sometimes the check engine light will blink on and off but It never leaves a code. Is there a check valve in the fuel press regulator. I am suspecting a loss of fuel pressure after I remove the gas cap and fuel the car. If I shut the car off and restart after long rides without opening the gas cap or adding fuel the car acts normal.
Any one ever experiencing this behavior??
Reply With Quote
The Following User Says Thank You to jbcarey For This Useful Post:
Admin1 (02-06-2010)
  #2  
Old 02-06-2010, 04:10 PM
Admin1's Avatar
Admin1 Admin1 is offline
Site Administrator
 
Join Date: Apr 2009
Owns: 2009 Hyundai Genesis
Location: North Pole
Posts: 2,461
My Mood: Cheerful
Thanks: 2,181
Thanked 2,384 Times in 1,320 Posts
Send a message via Yahoo to Admin1
Default

If this only happens after you fuel the car up I'm going to have to say it's a stuck open purge valve. What happens is while your fueling your car up the valve that is stuck open allows the fuel vapors to fill engine up an cause a flood start. If you want to check it, remove slowly(not to jar it so it will close) an see if you can blow through it. You should not be able too.
__________________
Admin1
Need help feel free to email me at
admin1@myhyundaiforums.com
MyHyundaiForums Chat Room
Reply With Quote
The Following User Says Thank You to Admin1 For This Useful Post:
jbcarey (02-07-2010)
  #3  
Old 02-07-2010, 01:57 AM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default

Hi ADmin1
Do you have a picture so I can see where this thing is?
Jeff
Reply With Quote
  #4  
Old 02-09-2010, 12:27 AM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default

Also if this is the case, will this stuck open valve cause a loss in gas mileage?
Reply With Quote
  #5  
Old 02-09-2010, 01:28 AM
Admin1's Avatar
Admin1 Admin1 is offline
Site Administrator
 
Join Date: Apr 2009
Owns: 2009 Hyundai Genesis
Location: North Pole
Posts: 2,461
My Mood: Cheerful
Thanks: 2,181
Thanked 2,384 Times in 1,320 Posts
Send a message via Yahoo to Admin1
Default

Yes it will. Like having a vacuum leak. Here is a photo to help. Remove this Vacuum line, You sould not be able to blow through it. If so its stuck open.
__________________
Admin1
Need help feel free to email me at
admin1@myhyundaiforums.com
MyHyundaiForums Chat Room
Reply With Quote
The Following 2 Users Say Thank You to Admin1 For This Useful Post:
jbcarey (02-09-2010), Rsquared (02-10-2010)
  #6  
Old 02-09-2010, 09:37 PM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default

Thanks Admin 1 you rock!
Reply With Quote
The Following User Says Thank You to jbcarey For This Useful Post:
Admin1 (02-09-2010)
  #7  
Old 02-21-2010, 09:20 PM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default

Replaced valve, purchased at local Car Quest, part came in a Hyundai box, 36 dollars and change.
Problem has been resolved gas milage back up where it was (around 25MPG)
AS always you have helped me out in a most excellent manner.
Jeff.

I found out that I could have left the bracket and wire clamp stay in place disconnected the electrical connection and hoses and then slide it out of the rubber bushing that it fits into. But as always experience is what you get right after you needed it!
Reply With Quote
The Following User Says Thank You to jbcarey For This Useful Post:
Admin1 (02-22-2010)
  #8  
Old 02-22-2010, 01:44 AM
Admin1's Avatar
Admin1 Admin1 is offline
Site Administrator
 
Join Date: Apr 2009
Owns: 2009 Hyundai Genesis
Location: North Pole
Posts: 2,461
My Mood: Cheerful
Thanks: 2,181
Thanked 2,384 Times in 1,320 Posts
Send a message via Yahoo to Admin1
Default

I'm very glad we could could help you on it! An thank you for your helpful tip! I'm sure it will help out others!
__________________
Admin1
Need help feel free to email me at
admin1@myhyundaiforums.com
MyHyundaiForums Chat Room
Reply With Quote
  #9  
Old 08-08-2010, 12:55 AM
jbcarey jbcarey is offline
Vip/Doner Member
 
Join Date: Jun 2009
Owns: 2003 Santa fe,2.7 and 2005 santa fe 3.5
Location: poughquag, ny
Posts: 89
My Mood: Confused
Thanks: 32
Thanked 73 Times in 49 Posts
Default

It has been a while since I solved my start up after refuel problem. Now I have a new problem, since I replaced the solenoid valve, after about a tank of gas ride (275 miles) I am getting fault codes of 0442 and sometimes 0456 I researched and checked and replaced gas cap, checked position of solenoid valve and looked at all of the plumbing and I can't figure it out, as this is maybe a result of the solenoid valve I think I will try another one, I know the valve was leaking and tht's why I had the start problem, but if I bypass the valve and connect the in and out lines directly together would that be worth trying to see if I can stop the fault codes
Reply With Quote
The Following User Says Thank You to jbcarey For This Useful Post:
Admin1 (08-08-2010)
  #10  
Old 08-08-2010, 03:13 AM
Admin1's Avatar
Admin1 Admin1 is offline
Site Administrator
 
Join Date: Apr 2009
Owns: 2009 Hyundai Genesis
Location: North Pole
Posts: 2,461
My Mood: Cheerful
Thanks: 2,181
Thanked 2,384 Times in 1,320 Posts
Send a message via Yahoo to Admin1
Default

I would not do this because you would get vacuum all the time to the canister assy. What will happen is when the PCM closes the Close Canister Valve it will allow vacuum to build on the fuel tank. This may cause too much vacuum to build an crush the fuel tank. Were did you get you gas cap at? Hyundai Dealer? Also it is very important the purge valve in installed right. Make sure again that is is on right. Also make sure your fuel neck is not damaged at the sealing surface of the fuel cap.
__________________
Admin1
Need help feel free to email me at
admin1@myhyundaiforums.com
MyHyundaiForums Chat Room
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Won't Start? dshaw340 Accent 2nd Gen (LC) 21 02-26-2014 09:10 AM
When i start sorinel Sonata 4th Gen (NF) 3 04-10-2012 03:21 PM
Start Admin1 Genesis Forum (BH) 2 01-06-2010 02:14 AM
Intermittent no start Admin1 Genesis Coupe (BK) 0 10-28-2009 12:25 AM


All times are GMT. The time now is 06:57 PM.