Quote:
Originally Posted by lagos
Trying to smell your sparkplugs to determine the a/f ratio of the engine is not exactly accurate. Its also an old myth from the carborated muscle guys. It worked well for them because carborators are so inefficient that over fueling would be insanely obvious.
Doesn't really work that well on fuel injected cars, because even if too much fuel is being sent, its still no where near as badly flooded as a carb car.
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Smelling wont do anything but you can tell allot visually from the plugs as long as you shut down the motor at WOT at the top of your rev range. We used to pull plugs after running motors on the engine dyno all the time.
I still think you have a boost leak somewhere....how much pressure did you charge the pipes to when you checked it? I would keep putting air in there until your wastegate opens. It could be a multitude of things....faulty BOV, bad check valve somewhere
If your running rich enough were the car is bucking and backfiring then your defiantly rich enough to wash down the cylinders and cause some real damage when your oil turns into nothing