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Car Forum / Mazda / Mazda Miata / November 20071999 Miata - Gasoline odor inside the car
In the mornings when I get in the Miata, I smell the distinct odor of gasoline. The car is garaged. No spills detected. I checked under the hood and did not smell anything so I'm assuming that the source is not in the engine compartment. My next assumption was a small leak in the gasoline supply hose. If there was leak I believe the check engine light would be on, but it isn't. But wait; what if the gas cap pressure sensor was broken? In an attempt to test this, I tool the gas cap completely off and drove for about 10 miles. The check engine light did not turn on. My questions to this group are: Which of my assumption are correct, which are wrong? Should the check engine light been triggered while driving without the gas cap? Has anyone else had the same problem (gasoline odor in the car)? How did it get resolved? What steps should I take to find the source of the leak? Thanks, - Pat For the "gas" smell in the car, check the gasket on the top of the tank. My '91 went thru that and that is what cured it. I know you don't have a spare tire in the trunk, but that is the most likely smell that people get when the car has sat for a time. The air in the tire comes out over time and it smell a lot like gasoline inside the car. Bruce Bing '03 LS I get an occasional gas smell in my '96. Doesn't seem to be correlated to gas fills. miker Check the rubber hose behind the aluminium pannel in the trunk (left side of the car). A rubber hose connects the fill cap with the fueltank and is hold in place with two metal clamps. In my MX-5 one of these had to be tightened to fix this problem. Werner B. > Check the rubber hose behind the aluminium pannel in the trunk (left > side of the car). A rubber hose connects the fill cap with the fueltank > and is hold in place with two metal clamps. > In my MX-5 one of these had to be tightened to fix this problem. Hey Werner - since, according to my newsreader, you're posting from APRIL 2007, can you give me the winning lottery numbers for the next couple of months? My Miata needs some new shoes before she goes playing at Pocono this year. <g> Iva & Belle.) '90B Classic Red.) #3 winkin' Miata Thank you, There is very small amount of gas where the rubber hose connect with the fuel tank. The metal clamp was tight, but I tighten it a bit more. Hard to believe this leaked. A previous post mentioned a gasket at the top of the tank. Is there one in the 99 models I need to be concerned with? Should the rubber hose be replaced? Should the clamps be replaced? Thanks, - Pat > Check the rubber hose behind the aluminium pannel in the trunk (left > side of the car). A rubber hose connects the fill cap with the fueltank > and is hold in place with two metal clamps. > In my MX-5 one of these had to be tightened to fix this problem. > > Werner B. > GUEST wrote > In the mornings when I get in the Miata, I smell the distinct odo o > gasoline. The car is garaged. No spills detected > I checked under the hood and did not smell anything so I'm assumin that th > source is not in the engine compartment > My next assumption was a small leak in the gasoline supply hose. If ther > was leak I believe the check engine light would be on, but i isn't. Bu > wait; what if the gas cap pressure sensor was broken? In a attempt to tes > this, I tool the gas cap completely off and drove for about 1 miles. Th > check engine light did not turn on > > My questions to this group are > Which of my assumption are correct, which are wrong > Should the check engine light been triggered while driving withou the ga > cap > Has anyone else had the same problem (gasoline odor in the car) [quoted text clipped - 3 lines] > Thanks > - Pa i have a 2000 miata, that I bought last year. It ha been getting more smelly in the trunk. It smells of gas, but I a) tightened the clamps on the hose to the gas tank b) inspected for leaks and could not find any c) looked around but cannot see anythin d) smell goes down when i leave the trunk open any way to suggest what else i can try > i have a 2000 miata, that I bought last year. It has > been getting more smelly in the trunk. It smells of gas The usual cause is overfilling the tank. Don't fill past the pump's first automatic cutoff. > GUEST wrote > In the mornings when I get in the Miata, I smell the distinct odo o > gasoline. The car is garaged. No spills detected > I checked under the hood and did not smell anything so I'm assumin that th > source is not in the engine compartment > My next assumption was a small leak in the gasoline supply hose. If ther > was leak I believe the check engine light would be on, but i isn't. Bu > wait; what if the gas cap pressure sensor was broken? In a attempt to tes > this, I tool the gas cap completely off and drove for about 1 miles. Th > check engine light did not turn on > > My questions to this group are > Which of my assumption are correct, which are wrong > Should the check engine light been triggered while driving withou the ga > cap > Has anyone else had the same problem (gasoline odor in the car) [quoted text clipped - 3 lines] > Thanks > - Pa Our 99 also smells like gas. Behind the metal cover o the left side in the trunk below the gas cap, found the filler hos leaking. Tightened the hose clamps but still smelling like ga especialy after a fill up and now have a check engine light coming o indicating that the system is not pressurizing. Still tracing th problem and am considering replacing the hosing next > > GUEST wrote: > > In the mornings when I get in the Miata, I smell the distinct odor [quoted text clipped - 31 lines] > indicating that the system is not pressurizing. Still tracing the > problem and am considering replacing the hosing next. My '99 does that, too! I believe it's that big rubber filler tube. I can see a trace of fuel under there when I fill up, and I assume making right turns with anything over a half tank would also cause a small amount to leak out. It only take a tiny amount of gas to make fairly significant fumes, but for me it's kind of like leaky roof syndrome - something I just keep putting off, even though I know those fumes are not particularly healthy to breathe. Geary >My '99 does that, too! I believe it's that big rubber filler tube. I >can see a trace of fuel under there when I fill up, and I assume making [quoted text clipped - 3 lines] >something I just keep putting off, even though I know those fumes are >not particularly healthy to breathe. Not to mention highly flammable. Don't fool around with gas leaks! Get it fixed. > >My '99 does that, too! I believe it's that big rubber filler tube. I > >can see a trace of fuel under there when I fill up, and I assume making [quoted text clipped - 7 lines] > > Get it fixed. I finally got around to fixing the leak. Simply tightening the clamp did no good. I would still see a trace of fuel under the bottom of the hose after driving for awhile. After removing the filler hose from the tank end, I discovered light surface rust all around the hose fitting on the tank - just under where the hose attaches. There was also a ring of the oxide inside the removed hose as well. I believe the fuel was seeping through this deposit, ever so slightly, but enough to smell up the interior and the trunk. I steel wooled the oxide off the fitting and used a dull knife to scrape it off the interior of the hose, then reassembled. No more smell! |
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