My dealer told me that I need a new coil. He doesn't have one. It is on order. The mower runs on only one cylinder for about 2 minutes at every lawn that I get to then the coil starts working and it runs fine till the next lawn. I was hoping he would sell me one off of a new unit, but I don't blame him for not.Am I hurting the engine if I let it run on only 1 cylinder for those 2 minutes or so??