leaks....
I sometimes check my fuel system integrity, by loosening and tightening the fuel cap. This checks not only the supply line, but the return as well.If you hear a hiss, when you loosen the cap, your "Golden". But now that you fixed the leak, you may want to get back to resetting the timing. Mine was running on the hot side on warm days at a setting as low as you set your's. Take a look at where mine is at the bottom of this message. A more negative setting will not only run cooler, it will also help you get better fuel mileage, and POWER !!!!!!! Just turn the top of the pump a hair at a time towards the drivers side to advance the setting, towards the passengers to retard.Then take it for a spin around the block. If it sets a code go back one hair. As others have said "It's shocking how close you can get to it by ear." The computer will set a code if you advance too far.
94 Chev Blazer, 6.5TD, 3.42, 4WD,Gear drive,,Remote FSD behind drivers headlight,,Mobil 1 in difs and trans,Rotella 30W, Over a quarter of a million miles !! Member -1.94 club.