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Fuel filling problem

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  #11  
Old 04-30-2011, 01:05 AM
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Originally Posted by jkeaton
Nice looking truck!
Thanks!

In case anyone was wondering, the fuel filler tube is designed that small on purpose. I quote...

The ORVR (On-Board Refueling Vapor Recovery) system is used to remove excess fuel tank vapors. This is done
while the vehicle is being refueled.
Fuel flowing into the fuel filler tube (approx. 1” I.D.) creates an aspiration effect drawing air into the fuel fill tube.
During refueling, the fuel tank is vented to the EVAP canister to capture escaping vapors. With air flowing into the
filler tube, there are no fuel vapors escaping to the atmosphere. Once the refueling vapors are captured by the
EVAP canister, the vehicle’s computer controlled purge system draws vapor out of the canister for the engine to
burn. The vapor flow is metered by the purge solenoid so that there is no, or minimal impact on driveability or
tailpipe emissions.
As fuel starts to flow through the fuel fill tube, it opens the normally closed check valve and enters the fuel tank.
Vapor or air is expelled from the tank through the control valve and on to the vapor canister. Vapor is absorbed in
the EVAP canister until vapor flow in the lines stops. This stoppage occurs following fuel shut-off, or by having the
fuel level in the tank rise high enough to close the control valve. This control valve contains a float that rises to seal
the large diameter vent path to the EVAP canister. At this point in the refueling process, fuel tank pressure
increases, the check valve closes (preventing liquid fuel from spiting back at the operator), and fuel then rises up
the fuel filler tube to shut off the dispensing nozzle.
EDIT: Just found a Technical Service Bulletin on this very issue. The bulletin number is 14-001-09 REV. A I hope this helps anyone else that has encountered a similar problem. I haven't tried it doing what it says yet, obviously, but will very soon as I have a trip to Austin, TX this coming week.

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 14-001-09, DATED
APRIL 15, 2009, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A
COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.

SUBJECT:
Hard To Fill With Fuel Or Fuel Nozzle Shuts Off Repeatedly

MODELS:
2004 -2008 (CS) Pacifica
2009 (DS) Ram Truck (1500)
2007 - 2009 (DH) Ram Truck (1500/2500 Pick Up)
2004 - 2009 (DR) Ram Truck (1500 / 2500 Pick Up)
2005 - 2009 (HB) Durango
2007 - 2009 (HG) Aspen
2005 - 2009 (ND) Dakota
2009 (JC) Journey
2007 - 2009 (JK) Wrangler
2007 - 2009 (J1) Sebring (China CKD)
2007 - 2009 (JS) Sebring/Sebring Convertible/Avenger
2006 - 2009 (K1) Cherokee (CKD)
2007 - 2009 (KA) Nitro
2008 - 2009 (KK) Liberty
2008 - 2009 (KK) Cherokee (International Markets)
2005 - 2007 (KJ) Liberty
2005 - 2007 (KJ) Cherokee (International Markets)
2005 - 2009 (LE) 300C/300C Touring (International Markets)
2005 - 2009 (LX) 300/Magnum/Charger
2007 (L2) 300 (China)
2008 - 2009 (LC) Challenger
2004 - 2009 (PT) Chrysler PT Cruiser

NUMBER: 14-001-09 REV. A
GROUP: Fuel
DATE: September 1, 2009
2007 (R2) Caravan/Voyager (CKD)
2005 - 2007 (RG) Chrysler Voyager (International Markets)
2003 - 2007 (RS) Town & Country/Caravan/Voyager
2008 - 2009 (RT) Town & Country/Grand Caravan
2008 - 2009 (RT) Town & Country/Grand Voyager (International
Markets)
2005 - 2006 (TJ) Wrangler
2005 - 2009 (WH) Grand Cherokee (International Markets)
2005 - 2009 (WK) Grand Cherokee
2006 - 2009 (XH) Commander (International Markets)
2006 - 2009 (XK) Commander

NOTE: This bulletin applies to all vehicles equipped with a gasoline engine.

DISCUSSION:
Customer may report that the vehicle is hard to fill with fuel or that the fuel pump nozzle
shuts off repeatedly while trying to fill vehicle.
This customer complaint can occur due to a number of different causes. The fuel tank is
the least likely cause of this condition. The following Diagnostic procedure can be used to
diagnose the issues.

DIAGNOSIS:
1. Is the vehicle a LX/LE/LC/L2?
a. Yes >> proceed to Step #2
b. No >> proceed to Step #4
2. Idle the vehicle 60 to 90 seconds upon stopping.
3. Does tank refill properly?
a. No >> proceed to Step #4
b. Yes >> Inform the customer to idle the vehicle for 60 to 90 seconds upon stopping if
vehicle was driven aggressively. This is due to the fact that on the LX/LE/LC/L2 the
fuel tank is a unique saddle tank design and needs 30 to 60 seconds while the
engine is running to level the fuel in both half's of the fuel tank. Allowing the vehicle
to idle for this amount of time will let the fuel pump transfer fuel to the left side tank,
opening the control valve and allowing normal fuel filling.
4. Disconnect the vapor recirculation tube at the fuel tank.
5. Attempt to refill fuel tank.
6. Does tank refill properly?
a. Yes >> Proceed to Step #7
b. No>> Proceed to Step #11.
7. Reconnect the vapor recirculation tube at the fuel tank.
8. Disconnect the other end of the vapor recirculation tube at the fuel filler tube.
9. Attempt to refill fuel tank.
10. Does tank refill properly?
a. Yes >> Replace fuel filler tube.
b. No >> Replace the vapor recirculation tube.
11. Disconnect the control valve to EVAP canister tube at the fuel tank.
14-001-09 REV. A -2-
12. Reconnect the vapor recirculation tube at the fuel tank.
13. Does tank refill properly?
a. No >> Replace Fuel Tank.
b. Yes >> Proceed to Step #14.
14. Reconnect the control valve to EVAP canister tube at the fuel tank.
15. Disconnect the control valve to EVAP canister tube at the EVAP canister.
16. Attempt to refill fuel tank.
17. Does tank refill properly?
a. Yes >> Blockage is in the EVAP Canister, or ESIM, or Clean air hose (ESIM vent
hose), or filter. Diagnose appropriately.
b. No >> Replace the control valve to EVAP canister tube.

POLICY:
Information Only
-3- 14-001-09 REV. A
 

Last edited by SS109; 04-30-2011 at 01:58 AM.
  #12  
Old 05-01-2011, 10:43 AM
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word of advise, Sharon just had her complete fuel tank and filler neck replaced, apperantly what is happening, the amount of ethanol that the gas companies are using, retain more water than they should, Sharon's gas tank, filler neck and check valve were rotting on the inside, everytime she would put gas in, it would spew out the filler neck. She has a 2007 nitro.
 
  #13  
Old 09-02-2013, 01:02 PM
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I have the same problem 2008 Dakota crew car 4.7... I believe its the canister giving me grief from previous owner over filling the tank... now I can only get a few bucks in at a time befor the pump clicks off .. now the canister is above the tank and I think it is easier to drop the tank and check all hoses and canister .. I will be back to let you know as I am doing this myself this week .. have a good one !!
 



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