help:I got bad gas.

[outlander]

This has been an on going saga here in my area that started last week.I filled up my tank at the certified station last week and it ran fine untill I ran it almost empty.It started to hesitate right off idle but runs perfect at all other rpms.I thought there was something wrong with a sensor or something but started thinking that it's bad gas.I got a half tank at a different station(kroger)and the hesitation and rough idle went away.Ok now yesterday I filled up at marathon and as soon as I pulled away from the pump the problem came back....wtf?This tank is so bad that when it idles it has a lope to it and I can hear a knock,like ping which leads me to believe the fuel is low quality.

If this is bad gas how do I prove it???I'm tired of paying these theives 35.00 for shit gas!!!

B.t.w fuel pump,o2 sensor,injectors,engine,and most other things are new so I don't think it's mechanical....although it's possible.The reason I think it's crappy gas is the problem is intermitten.

t.i.a

 

[RichP]

I've been buying my gas at a Turkey Hill right near work ever since I had my engine replaced back in ~dec or so, last week when prices shot up .07 over nite I stopped at the out of way Hess station where it was .15 cents cheaper, my XJ has been running much better with the Hess, hesitation is almost gone.
As for you I'd fill it up with a good brand of gas and dump in a 20oz size can of Chevron Techron or a can of SeaFoam till it gets pretty much out...
The other option is to drop the tank and drain it and I'm not into that unless I have to..

 

[Evan463]

Ive had this problem, I stoped at a getty station becuase it was 10 cents off mondays and by the time i got below a quarter tank I was having rough idles and misfires.

I fixed this by buying 2 bottles of concentrated fuel injector cleaner and dumping both of them in the tank then filling the tank to about a half tank with a higher octane than usual, withing driving 2 or 3 miles it was totally cleared out and running normal.

 

[outlander]

Yea that's what I did the first time...octane booster and stp fuel treatment.I'm wondering if these crooks are putting too much ethanol in the gas around here...

 

[lawsoncl]

The local gas stations don't have any control over the amount of ethanol in the gas mix. They just pay a distributor to send a truck and fill their tanks. I suspect the problem here is water in the gas, which would be a local gas station problem and worth reporting to the local EPA as they might be leaking gas into the ground if it's a tank leak.

Drygas is mostly methanol and ethanol. Alcohol mixes with both water and gasoline and helps distribute the water evenly throughout the mixture. That way the water gets burned slowly rather than getting sucked up by the fuel pump all at once and causing problems. I have heard of one gas station that deliberately added 2% water to their 10% gasahol under the notion that it would mix in because of the ethanol. After lots of complaints and an inside tip, the attorney general filed fraud charges and the gas stations franchise was pulled.

 

[Wa Woody]

Whenever a gas station is refilling their tanks I'll move on to another station due to water and sediments being agitated in the process of filling their tanks. It floats water and sediment above the foot valve allowing it to be pumped into any unsuspecting tank. This happened to me on a hunting trip in Alaska. My fuel line froze with water before I made it out of the station parking lot onto the highway. I had to drain all the contaminated gas out, a full tank too, replace the fuel filter and refill with clean gas to get my rig running again. It took me a couple hours, freezing my butt off, under my Jeep in record cold temps. in Klawock, Alaska on Prince of Wales Island to get my rig going again. A lesson learned and not soon forgoten! Good Luck

Woody

 

[anodyne33]

Whenever a gas station is refilling their tanks I'll move on to another station due to water and sediments being agitated in the process of filling their tanks. It floats water and sediment above the foot valve allowing it to be pumped into any unsuspecting tank. This happened to me on a hunting trip in Alaska. My fuel line froze with water before I made it out of the station parking lot onto the highway. I had to drain all the contaminated gas out, a full tank too, replace the fuel filter and refill with clean gas to get my rig running again. It took me a couple hours, freezing my butt off, under my Jeep in record cold temps. in Klawock, Alaska on Prince of Wales Island to get my rig going again. A lesson learned and not soon forgoten! Good Luck

Woody

whoa! playing with gas in freezing temperatures... there's an afterschool special waiting to happen! glad to hear you didn't flash freeze yourself.

 

[outlander]

The local gas stations don't have any control over the amount of ethanol in the gas mix. They just pay a distributor to send a truck and fill their tanks. I suspect the problem here is water in the gas, which would be a local gas station problem and worth reporting to the local EPA as they might be leaking gas into the ground if it's a tank leak.

Drygas is mostly methanol and ethanol. Alcohol mixes with both water and gasoline and helps distribute the water evenly throughout the mixture. That way the water gets burned slowly rather than getting sucked up by the fuel pump all at once and causing problems. I have heard of one gas station that deliberately added 2% water to their 10% gasahol under the notion that it would mix in because of the ethanol. After lots of complaints and an inside tip, the attorney general filed fraud charges and the gas stations franchise was pulled.

By they I mean the refineries. or distributors......