Truck dosn't like gas anymore..... WTF
Jun 21, 2006 | 06:42 AM
#21
or an evap code. I believe, and I may be wrong but on my tank off to the side is another small tank. I believe it is the evap tank. If you are one of those people who keep filling it up even after the nozzle clicks off, "Topping it off", you could be causing an small overflow into this evap trap, causing a back pressure.
I don't know this from experience, just this mechanic who used to work for my friend, he is one of those "freaks" that know everything. Probably should of been an engineer of some sort. But he had a car in one time with this issue and he was trying to explain to me how topping off caused this. Ususally people don't have issues, but some will. He had to replace the evap bowl, trap, tank or whatever the F it is.
Hmmmm...
is what I said to him. But hey, it seems you have brought a problem not many have heard of. Again, why not take it the dealer? Warranty?
I don't know this from experience, just this mechanic who used to work for my friend, he is one of those "freaks" that know everything. Probably should of been an engineer of some sort. But he had a car in one time with this issue and he was trying to explain to me how topping off caused this. Ususally people don't have issues, but some will. He had to replace the evap bowl, trap, tank or whatever the F it is.
Hmmmm...
is what I said to him. But hey, it seems you have brought a problem not many have heard of. Again, why not take it the dealer? Warranty?
Jun 21, 2006 | 01:52 PM
#24
That is a nice find DR X...one of the items I was going to mention is the charcoal cannister. We've had some problems with Toyota/Lexus and the fuel nozzle kicking off while filling. Some of the problems can be traced back to the cannister, others have to do with a sticking ORVR valve (can't remember what it stands for, but I believe it has to do with pressure relief while fueling). Most of the time the vehicle will have the fueling problem, yet not throw a code.
The charcoal cannister is located right on the driver's side frame rail. You can examine various lines and hoses that go to it and look for ones that go to the fuel tank. Try disconnecting various hoses while or prior to fueling and see if the problem persists. If disconnecting one of the lines/hoses to the cannister allows you to fuel up at full speed, you've just narrowed your problem down to the cannister or one of the valves in it.
Be aware that disconnecting these hose will lead to a possible check engine light and evap code, so don't disconnect them as a permanent fix, just as a diagnostic help.
The charcoal cannister is located right on the driver's side frame rail. You can examine various lines and hoses that go to it and look for ones that go to the fuel tank. Try disconnecting various hoses while or prior to fueling and see if the problem persists. If disconnecting one of the lines/hoses to the cannister allows you to fuel up at full speed, you've just narrowed your problem down to the cannister or one of the valves in it.
Be aware that disconnecting these hose will lead to a possible check engine light and evap code, so don't disconnect them as a permanent fix, just as a diagnostic help.
Jun 21, 2006 | 10:52 PM
#26
Originally Posted by .T.
Seems like if it was blocked it would just 'click' and shut off instead of filling slowly...
Originally Posted by LesPaul
if it was me i would bring it to the dealer and let them tell you what it is and fix it yourself
Originally Posted by promod1955
My truck does this sometimes at first. i take it out and put it back in and kinda hold it at a different angle. then its fine. It does exactly what yours does at first then its fine. try not sticking the nozzle down as far. I think that's what does it to my truck sometimes.
Originally Posted by BADMOFO
Do you have a SES light on? Do you have a scan tool? Check and see if you have a code P0440 or P0453 stored. You may have a problem with the gas tank pressure sensor, which usually requires dropping the tank to replace, although some say they have squeezed their arm in between the frame rail and bed and been able to replace it without dropping the tank. Check for the codes and let us know.
Originally Posted by dewmanshu
or an evap code. I believe, and I may be wrong but on my tank off to the side is another small tank. I believe it is the evap tank. If you are one of those people who keep filling it up even after the nozzle clicks off, "Topping it off", you could be causing an small overflow into this evap trap, causing a back pressure.
I don't know this from experience, just this mechanic who used to work for my friend, he is one of those "freaks" that know everything. Probably should of been an engineer of some sort. But he had a car in one time with this issue and he was trying to explain to me how topping off caused this. Usually people don't have issues, but some will. He had to replace the evap bowl, trap, tank or whatever the F it is.
Hmmmm... is what I said to him. But hey, it seems you have brought a problem not many have heard of. Again, why not take it the dealer? Warranty?
I don't know this from experience, just this mechanic who used to work for my friend, he is one of those "freaks" that know everything. Probably should of been an engineer of some sort. But he had a car in one time with this issue and he was trying to explain to me how topping off caused this. Usually people don't have issues, but some will. He had to replace the evap bowl, trap, tank or whatever the F it is.
Hmmmm...
is what I said to him. But hey, it seems you have brought a problem not many have heard of. Again, why not take it the dealer? Warranty?
Originally Posted by DrX
Looks like there are several possibilities:
The check valve is stuck closed----I can push it open with a pen
The fill limiter vent is stuck closed----??
The EVAP canister is restricted----Maybe full of gas as stated above
The EVAP canister vent solenoid is stuck closed---??
Restricted EVAP pipes----??
High Reid vapor pressure----Tank hisses now???
High fuel temperature----Has been way hotter before, and it was cool tonight and it still happened
The fuel filler/pipe is pinched, kinked or blocked----Removed fill neck and tube and all is clear, unkinked and undamaged
The fuel feed hose, or crossover hose, is pinched, kinked or blocked----Think it is the same as above
The ignition switch is on----No, never on
Good info here, where did you get this jem???
Originally Posted by BADMOFO
Nice find.
Originally Posted by budhayes3
That is a nice find DR X...one of the items I was going to mention is the charcoal canister. We've had some problems with Toyota/Lexus and the fuel nozzle kicking off while filling. Some of the problems can be traced back to the canister, others have to do with a sticking ORVR valve (can't remember what it stands for, but I believe it has to do with pressure relief while fueling). Most of the time the vehicle will have the fueling problem, yet not throw a code.
The charcoal canister is located right on the driver's side frame rail. You can examine various lines and hoses that go to it and look for ones that go to the fuel tank. Try disconnecting various hoses while or prior to fueling and see if the problem persists. If disconnecting one of the lines/hoses to the canister allows you to fuel up at full speed, you've just narrowed your problem down to the canister or one of the valves in it.
Be aware that disconnecting these hose will lead to a possible check engine light and evap code, so don't disconnect them as a permanent fix, just as a diagnostic help.
The charcoal canister is located right on the driver's side frame rail. You can examine various lines and hoses that go to it and look for ones that go to the fuel tank. Try disconnecting various hoses while or prior to fueling and see if the problem persists. If disconnecting one of the lines/hoses to the canister allows you to fuel up at full speed, you've just narrowed your problem down to the canister or one of the valves in it.
Be aware that disconnecting these hose will lead to a possible check engine light and evap code, so don't disconnect them as a permanent fix, just as a diagnostic help.
Originally Posted by .T.
damn good info
OK guys I have a lot of homework to do here, this is pissing me off, I will think of what I can do without taking the bed off or the tank down.
Thanks Guys!!!!
I'll keep you updated...
Jun 22, 2006 | 09:46 AM
#28
That info is from the eSi service manual. Some items refers to dual tank setups(e.g. "crossover"). Some components may be part of the evap module. I would try disconnecting the tank vent line from the evap cannister, etc. as described by budhayes3 to isolate the problem.
Jun 22, 2006 | 10:40 AM
#29
Teching In
Joined: Aug 2005
Posts: 12
Likes: 0
From: SoCal
My buddy had the same problem with his suburban, took 15 minutes to fill the tank. Took it in to the dealer, and they told him that there is, for lack of the appropriate term "a latch" that is in there, that is there for safety reasons, so fuel won't spill out in an accident/rollover type situation. He had to have that fixed/replaced...
