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Whenever I park my car in the garage I notice the smell of gasoline. It lasts for about 15 minutes. I opened the hood but there isn't any indicator (smell/leak) of gasoline. Even if I open the cover of the gas door there is no smell of gas. No leaks underneath the car.
The only thing I did that could affect the fuel injection system is that 2 months ago I used the Red Line 60103 SI-1 Complete Fuel System Cleaner https://a.co/d/00GrzI6m
Anything else in the garage that could be leaking gas? Just last week i walk into my basement where I keep all my yard equipment and smelled gasoline which was very unusual. I look under my string trimmer hanging up and a small puddle of gas on the floor. Found a crack in the plastic gas tank.
When you park in the garage do you open the hood first and smell for gas, then shut the engine off and quickly go sniff around again? thats what I would do, sniff around with the engine still running then shut the engine off, check all around again.
PZEV engines have the additional charcoal filter installed right after the regular air filters, they are for collecting any unburned fumes that may escape back out the air filter right after shutting the engine off. As you know the pcv hoses all go to the area at the throttle body.
have you scanned the car for any fault codes? Wonder if the purge valve may be stuck in the open position.
No other gas in the garage. When I park in the garage, the moment I open the door, I can smell the gas. No check-engine light or any other fault codes show up on the dash. But I will take it to a repair shop and have it checked out
Good point about the purge valve. I will get it checked out too.
You might want to perform a Fuel Pressure leak-down test to rule out any leaking fuel injectors. If even if just one injector is dropping fuel into your engine overnight, the vapors will escape through the airbox opening (and will also cause fuel dilution of your oil which is not good so make sure you smell your oil through the oil fill hole or directly on the dipstick). Other areas to check would be gas cap seal, vent valve, and the fuel filler neck,. Also, if the purge valve is stuck in the open position, the vapors will also eventually vent through the air box opening. And lastly, and most obviously (even though you already checked), checking the entire length of your fuel lines for any leaks after sitting overnight with a good light. Hope you can chase it down.
P.S. -- if you.only smell fuel within 15 minutes of shutting the car off, the two areas i would suspect first would be an externally leaking injector past the o-rings and/or a stuck purge valve since this would be peak-vapor time.
Got it diagnosed and turned out to be a leak at the left fuel pump. Replaced the fuel pump and oring. Learnt that there are two fuel pumps.
Got charged a hefty $500 to fix it. Non dealer. I think I got overcharged for it.
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