Hello everyone idk if I am posting this in the right section or not but here it goes I have a 1990 Mazda Miata with a 1.8 swap. I have been having a gas leak over my exhaust I pulled the top couver behind the seats and felt around no gas leak there. I crawled under the car and can see it running down the front of the gas tank onto the exhaust but can't find where it's coming from. Any help would be appreciated

 

You should fix the gas leak. Gas comes from the gas tank. You're welcome.

 

Sounds like the seam between the tank halves is leaking. Im guessing you need a new tank.

 

Ya a new tank is what it was but I got it done for $700 with tank thanks everyone

 

1999 Miata. Had the severe gas leak on the drivers side, just behind the seat when looking at the car from the side. Checked the connections in the trunk - all OK. Checked the fuel filter - All OK. So I removed the access panel for the fuel pump that is located directly behind the seats. There are two fuel hoses there, one for the supply to the engine, one is the return line. As soon as I hit the ignition switch (but did not start the car, just energized the fuel pump) I saw a drip from one of the lines. Those two lines go down to the fuel filter.

The hose ends were split, most likely from age. So I replaced the two fuel hoses with appropriate 7.9 MM fuel rated hoses from Autozone. I added several inches ( 3 feet total length on the new hoses) to give more room to maneuver. PITA to connect as they are really tight. WD40 on the hose and the fitting helped. 2 clamps per fitting. Used the red wire to snake the hose down to the filter and pull a new one up to the pump.

Severe gas leak on drivers side solved. This MIGHT be the fix for the fuel smell some people report.