Went for a drive yesterday for about 30 minutes, then parked for 5-6 hours. When I started and idled for a minute, something smelled like gas. Popped the hood and the #1 (front) injector was gushing gasoline. It appeared to be leaking from the upper rail end, but gas was going everywhere, so hard to really tell. Everything there is original and hasn't been touched since I bought it new in 2/1994.
Rotated the injector hoping the seal would reseat (if that was the problem), but nothing changed. Shut the engine off and looked closer, nothing obvious. Rotated the #1 injector again, it rotates very easily. I tried a couple of others which did not move with minimal force. Didn't force them as I didn't want more leaks.
Gave it enough time for the gas to evaporate, then started it up again. No leak. Let it idle for several minutes, increased RPMs a few times, still no leak. The leak just stopped. I took a chance and drove home stopping frequently to check. Also kept the vents open so the gas smell would be obvious if it started again. Arrived home and parked it. Not wanting a fire, I hesitate to keep driving it without at least replacing all the injector seals.
Does this sound like a seal going bad or something else? Would it seal properly again just by rotating the injector a few times?
Are the upper and lower seals the same size?