somebody know what is the code 43 (fuel supply sistem problem) on my DA6 !! help!! also have the no. 1 O2 sensor!! it makes like stalling at 2500 to 4000 RPM in all 5 speeds only in that range but, if i press the accel more than a half runs fine, this is what i did to my B18A1, new piston rings, rod bearings, and machined the cylinder head like 3 times i don't if is to lower and that makes the problem, spark plugs ok, wire set ok, rotor and distribuitor cap is ok, new fuel filter, and sometimes check light, jeje in the top is the code i got, thaksfull if somebody help me!!!