'87, 2.5L (stock), 5 speed; I filled it up the other day (when the pump clicks off - I stop) and it took about the right amount. I drove it to/from work and around then got home and had a noticeable gas smell. I noticed on a couple of stops that it took a little longer to start. I always check the fuel economy and this last tankful was down about 10%. I got 30 mpg instead of the usual 33 mpg.

After sitting all night in the garage, the gas smell was still there. No drips underneath and no wet spots around the filler, lines or filter. I plan to take off the air filter and turn the key on to see if any fuel is spraying out on the engine. Fuel pump seems to be working fine

Are there any known or likely issues associated with the fuel system that could cause this? I will check the Ogre's Cave this evening when I have more time.

thanks, Jimmy

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1987 Fiero coupe; Blue; 2.5L; 5-spd
1987 Firebird Formula; Blue; 5L; 5-spd

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[This message has been edited by tshark (edited 09-08-2018).]

This could be a hole in the fuel filler vent tube or a hole in the hose going to the vapor canister. It could also be that the vapor canister filter is clogged completely. When you were filling the car some gas could have went into the vent tube also. This is nothing to mess around with. Our cars are old and if the tank has never been dropped its a good idea to drop it and replace whatever dried out and cracked fuel hoses you may find.

The 87 has a fuel expansion tank between the battery and the body panel. The steel lines that run to it are under the battery tray...you can see them if you remove the battery. They often rust through.....and leak. Another thing for you to check.

thanks for all the tips… I found the leak… turns out there is a pin-hole leak in the bottom of the tank. I have needed to fix the fuel level sending unit for a couple of years… now I'll have to remove it to replace the tank (so I might as well get it working).

Fortunately, I have an extra tank from a car I parted out last year.

If it is not one thing it's another.

- Jimmy

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1987 Fiero coupe; Blue; 2.5L; 5-spd
1987 Firebird Formula; Blue; 5L; 5-spd

Yes its always something on our cars that are getting older all the time.