Mazda 6 Forums banner

problems with engine after filling with gas

10438 Views 14 Replies 11 Participants Last post by  franchize
Anybody else have their engine struggle, surge and almost stall out immediately after getting gas, this is two fillups in a row now, after a min or so it is fine... Guess i'll had back to the dealer, again... (27 days total my car has been in the shop now with 6800miles on the odometer)
1 - 15 of 15 Posts
Dont feel bad ive owned my car now for 15 days, and its been in the shop for 8 of em.
So nobody else huh? This was two different gas stations, and about a week apart, both times I ran it down until the gas light turned on, then filled up, go to start the car and it struggles, if i rev it up then let off the gas the rpm's drop down and just barily misses stalling or does stall. Not cool.
I don't have the problem you have, but it sounds like maybe bad gas, filter, ecu?? I would take it in.

So nobody else huh? This was two different gas stations, and about a week apart, both times I ran it down until the gas light turned on, then filled up, go to start the car and it struggles, if i rev it up then let off the gas the rpm's drop down and just barily misses stalling or does stall. Not cool.
[/b]
I won't think it would be the gas if it was happening right after you fill the tank. It takes a little bit if time for that gas to get to the engine.

Are you topping off the tank? Maybe when you top off the tank it is filling a vent hose with gas and then the engine doesn't run right.
I won't think it would be the gas if it was happening right after you fill the tank. It takes a little bit if time for that gas to get to the engine.

Are you topping off the tank? Maybe when you top off the tank it is filling a vent hose with gas and then the engine doesn't run right.
[/b]
Nope, I pay with debit card, so i never bother topping off, once the pump turns off, i pull it out. Also, i dont' think it is bad gas because like mentioned it is as soon as I start the car, and has happened at two different gas stations. It's like the car doesn't run correctly until some has pressure has formed in the gas tank, I wonder if there is something wrong with my gas cap? I tighten it down all the way (3clicks), and it looks to be in good condition, but who knows.
run around the car three times and then pump the gas pedal once before you turn the car on, see if that helps.
Nope, I pay with debit card, so i never bother topping off, once the pump turns off, i pull it out. Also, i dont' think it is bad gas because like mentioned it is as soon as I start the car, and has happened at two different gas stations. It's like the car doesn't run correctly until some has pressure has formed in the gas tank, I wonder if there is something wrong with my gas cap? I tighten it down all the way (3clicks), and it looks to be in good condition, but who knows.
[/b]
I'm betting it's your filler cap has a crack or something. Had the same problem in my truck - stalling right after a fill up - and the dealer replaced it, fixed the problem.

Though if that is the case, I'm surprised you're not getting a CEL. I was getting one of those on my truck when the cap was cracked and not getting a good seal.

anyway, my 2 cents
I'm betting it's your filler cap has a crack or something. Had the same problem in my truck - stalling right after a fill up - and the dealer replaced it, fixed the problem.

Though if that is the case, I'm surprised you're not getting a CEL. I was getting one of those on my truck when the cap was cracked and not getting a good seal.

anyway, my 2 cents
[/b]
The Manual mentions CEL can come up if the fuel cap is not closed fully. It may be some pressure or sensor thing. Better take it to the dealer.

My CEL came up a day after I bought the car. Had to take the Car in 3 times in the first month (ended up with the car being in the shop for total of 17 days :(). Things alright since then. Touch wood.
run around the car three times and then pump the gas pedal once before you turn the car on, see if that helps.
[/b]
No but seriously, thanks for that. Asshat.

I'm betting it's your filler cap has a crack or something. Had the same problem in my truck - stalling right after a fill up - and the dealer replaced it, fixed the problem.

Though if that is the case, I'm surprised you're not getting a CEL. I was getting one of those on my truck when the cap was cracked and not getting a good seal.

anyway, my 2 cents
[/b]
Yeah, i would suspect a check engine light for bad gas cap as well, but it is the only thing I can think of that would cause this problem, Cause if it was the fuel pump, it wouldn't happen only after a refill, and nothing else should effect this system... I asked the service manager about it today but of course he was no help.
Anybody else have their engine struggle, surge and almost stall out immediately after getting gas, this is two fillups in a row now, after a min or so it is fine... Guess i'll had back to the dealer, again... (27 days total my car has been in the shop now with 6800miles on the odometer)
[/b]
There have been posts here or on other sites that: Some owners have had bad caps and when brought back to the dealer had it replaced with "a new designed cap" . Sounds like a few owners have had a gas cap problem that very well be your problem. good luck
Just wondering, am I the only one who thinks the gas cap is not as tight when it is on?
There have been posts here or on other sites that: Some owners have had bad caps and when brought back to the dealer had it replaced with "a new designed cap" . Sounds like a few owners have had a gas cap problem that very well be your problem. good luck
[/b]
Hum, thanks for that info, i'll definitely look into it, I wonder why the service manager didn't say anything, i asked if he had seen any service bulletions about gas cap issues.
Hum, thanks for that info, i'll definitely look into it, I wonder why the service manager didn't say anything, i asked if he had seen any service bulletions about gas cap issues.
[/b]
Most service managers couldn't point out to you where you gas cap is unless they had the manual in front of them. They are merely a middle man between you and the tech that works on your car.

I agree with the posters above about the cap. That is the most likely candidate.
I'd also suggest filling up sooner. Waiting for the gas light leaves you with very little fuel, and you can starve the pump in certain instances. You will slowly ruin the fuel pump sooner rather than later.


Other than getting a new gas cap, I doubt the dealer will do much.
1 - 15 of 15 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top