| : Power Loss between 3000 and 4000 rpm please help APOBEK May 6th, 2012, 10:54 AM I have this problem in my r53 JCW 2004 model: with 3rd and 4th gear and maximum acceleration, full throttle have power loss between 3000 and 4000 rpm like 2 or 3 small cut offs if anyone can help me I would appreciate Thanks Acallahan May 6th, 2012, 03:08 PM check fuel injectors and also what quality of fuel are you running ? I would try a couple bottles of fuel system / injector cleaner in your tank and see if there is any improvement. I also would get the codes checked and see if you are throwing any codes. APOBEK May 6th, 2012, 09:07 PM The problem start after the inspection 2 service at 82000 km they put wrong plugs BKR6EQUP NGKs fitted rather than the specified BKR7EQUP and start the cut offs I go the next day and they put the correct plugs but the problem don't go. the dealer check the fuel injectors and they are OK I put yesterday a bottle of cleaner and I wait. make 60 km and see some improvement but the problem is there Thanks APOBEK May 27th, 2012, 09:15 AM I check the coil for corrosion I clean them and put dielectric spray The car is better No cut offs in 3d and some times 1 cut off in 4th speed APOBEK Jun 7th, 2012, 07:45 PM I check the coil and the sparkplugs again I clean them with metal brush and put dielectric spray THE PROBLEM SOLVED:) Thank you all | ||