Car Engine (1Az-Fse) Running Rich On Fuel
hello, i have been having this problem with my avensis for a while, but have finally decided to find the cause and hopefully fix it.... the problem is, as it seems, that the engine is running rich, which results in significant carbon build up on the spark plugs, and in the tail pipe. also, in the last 6 months the car has had a noticeable drop in power, accelerating is much more difficult, and often the car will stutter/***** once or twice while accelerating and then the jerking will disappear (
ok, after some changes in the situation it is time to update the topic... as i previously mentioned i had used a bottle of redline SI-1, and this product definitely cleaned something, since after using up the tank of gas, i removed a couple of the spark plugs and the main electrode was now clean. the rest of the spark plug was still fouled in carbon build-up, but at least one of the three electrodes was clean (i'm guessing because it was most exposed to the redline fumes). this lead me to believ