I'd find it hard to believe that any car that new is running rich enough to smell gas and not throwing codes out the rear end.
Pulling a plug might give you some idea, although I've seen FI plugs come out all different colors. Most tend toward dark brown-a bit darker than we usually shoot for with a carb, but still more on the brown end than black. There again, if it were running that badly rich, your plug would probably be coal black all over and possibly even wet. I don't know the Fit engine specifically, but a lot of modern engines have the plugs buried deep enough that pulling them for routine inspection isn't a task I want to take on
.
As a general rule, getting a good seal on plugs takes very little torque. I usually see torque specs in the 10-20 ft-lb range, which is low enough that I sometimes find hearing/feeling the click on my torque wrench. The rule of thumb I've heard for new plugs is 1/4 turn past finger tight to seal the crush washer. An old mechanic advised me to use my left hand(or non-dominant hand) and choke it up almost on the head of the socket wrench. Turning it tight(but not forcing it) will be about right.
Remember that FI systems operate at high pressures, and any loss in integrity of a line or joint can cause a leak(albeit often a slow leak). I've seen it happen when folks(I'll plead the 5th on the person to whom I might be referring
) reused an old clip after replacing a fuel filter.
Pulling a plug might give you some idea, although I've seen FI plugs come out all different colors. Most tend toward dark brown-a bit darker than we usually shoot for with a carb, but still more on the brown end than black. There again, if it were running that badly rich, your plug would probably be coal black all over and possibly even wet. I don't know the Fit engine specifically, but a lot of modern engines have the plugs buried deep enough that pulling them for routine inspection isn't a task I want to take on
As a general rule, getting a good seal on plugs takes very little torque. I usually see torque specs in the 10-20 ft-lb range, which is low enough that I sometimes find hearing/feeling the click on my torque wrench. The rule of thumb I've heard for new plugs is 1/4 turn past finger tight to seal the crush washer. An old mechanic advised me to use my left hand(or non-dominant hand) and choke it up almost on the head of the socket wrench. Turning it tight(but not forcing it) will be about right.
Remember that FI systems operate at high pressures, and any loss in integrity of a line or joint can cause a leak(albeit often a slow leak). I've seen it happen when folks(I'll plead the 5th on the person to whom I might be referring
