i have a 1990 4runner. yesterday i noticed gas fumes were really bad when it is running. after it sits 4 awhile it is hard to start. checked all the fuel lines,nothing. looked at injectors while it being started, could not see anything. but the fumes are worse in that area. any ideas?

The cold start injector can start leaking and drip fuel into the intake after it sits for awhile. Remove the injector, and with it still connected, run the fuel pump without starting the engine. Look for dripping. It may not do it every time.
You can also remove the rubber intake tube and look for fuel inside the engine after it's been sitting overnight.

thanks