305 TBI Strong Unburnt Fuel Smell in and Around car.
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 56
Likes: 0
From: British Columbia, Canada
Car: 1989 Firebird
Engine: 305 TBI
305 TBI Strong Unburnt Fuel Smell in and Around car.
Hey guys, just got my 1989 Firebird 305 TBI back on the road.
Now I'm starting to eliminate problems one by one.
Since I got the car it's had a strong gas smell, like the TBI is pumping too much fuel into the motor, and it's unable to burn it all off. Last time I cleaned my TBI the Air cleaner was wet inside (which I'm assuming was gas based on the smell)
What do I do about this? id like to at least burn the gas I'm using while it burns a whole in my pocket
Any help would be greatly appreciated!
Now I'm starting to eliminate problems one by one.
Since I got the car it's had a strong gas smell, like the TBI is pumping too much fuel into the motor, and it's unable to burn it all off. Last time I cleaned my TBI the Air cleaner was wet inside (which I'm assuming was gas based on the smell)
What do I do about this? id like to at least burn the gas I'm using while it burns a whole in my pocket

Any help would be greatly appreciated!
Supreme Member
Joined: Nov 2008
Posts: 1,146
Likes: 6
From: Houson
Car: 86 Firebird
Engine: 305 SBC
Transmission: 700 R4 TCI
Axle/Gears: 3.42
Re: 305 TBI Strong Unburnt Fuel Smell in and Around car.
Sounds like an injector leak, possibly a bad pressure regulator. Look at the injector while the car is running and see if it is spraying anywhere but where it should. And then have some one shut the motor off and see if it is still peeing, could be stuck open.
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 56
Likes: 0
From: British Columbia, Canada
Car: 1989 Firebird
Engine: 305 TBI
Re: 305 TBI Strong Unburnt Fuel Smell in and Around car.
Okay thanks! I'll try that out tomorrow.
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