Hello everyone. My father is the first owner to drive a Mazda 626 GE FH, 1,9l 90PS petrol, year 95 with 250 tkm. He has recently run the problem that when the engine was speeding up the engine, it was irregularly jerking, igniting or swallowing. On the troubleshooting I noticed that the distributor finger and the contacts on the distributor cover were quite worn out, so we made it new. We also renewed the spark plugs, because they were blacked out… of course h we have installed NGK spark plugs again, because the engines have problems with the others of e.g. Bosch. However, with both no success. I have a colleague who works at Mazda, so I am to the workshop and this one has isolated the contact insulation of the spark plugs of the ignition cables, because, as he said, because the spark does not jump to the spark plug, but to the engine block… however, this was also not the fault. I don’t know any more… Do you have any experience with this problem??? Does anyone know a solution??? I thank you in advance…