hi there new to this forum i am looking at one of my frenids car he has audi a4 140 bhp engine code bre 55 reg .engine has mis fire put code reader on coming up with number 4 injector fault open ciruit.
phone local audi dealer and there said the engine code is not on recall list. is correct ?
i decided to remove injector to test it put omhs meter on it and there is a circuit am i testing it correctly ?
if i replace the injector do i have to adjust the rocker arm nut if so what is the procedure
any info welcome