I have an old TD9 that is giving me fits, started and ran fine one day and now will not start on gas, have done a lot of reading on this forum and now looking for a little help. The carb is clean, getting good fresh gas to the bowl. Spark is good and it will run on diesel if pull started by my other cat, my dad always told me that is a last resort. From what I have read so far the most likely problem is flapper in the intake manifold. If anyone has some pictures of what everything is supposed to look like with the linkeage while the cat is running on gas I would appreciate it. I found an old discussion but the link to photos will not open. If anyone thinks I am headed in the wrong direction please feel free to give advice. I have been operating the old thing since I was about ten but my dad kept it maintained and he passed away last year so I am learning as I go.