Sounds like a valve problem. I ordered an OEM tecumseh coil pack just to make sure. But I have performed all the above. Anyone have the procedure for performing a valve job?
Recently I was gifted a non running MTD trimmer. When I give it a good tug the engine seems to have good compression. Seems to have good fuel delivery as the spark plug is always wet when removed. Replaced the coil pack with one from Amazon. Spark is nice and blue when gapped at the 20 mark on...