K.Campbell
Member
So my dads TO30 Ferguson had the engine rebuilt about 4 years ago, valves ground and the whole 9 yards. It has new plugs, cap, rotor, 12 volt ignition system, and petronix electronic ignition. Anyhow, now when it gets hot outside and hes running the PTO it sputters and nearly dies. He shuts it down letting it cool some, then it fires right back up.. runs for a while then the same. I told dad to get a temp gauge and Id install it for him, he got one with no numbers, just red and green for temp indication. I installed it even though I told him Id rather have the ones with numbers. He said it never goes out of the green.Anyhow, he called me today and said he was having issues with it, I went to where he was mowing and observed it spitting and sputtering, I noticed his sediment bowl had some bubbles, it looked like they were coming into to fuel bowl from the line. I also noticed that whoever made up the fuel line that it actually runs a little bit up hill in 2 spots. His gas cap is completely open , I blew through it both directions. The fuel line isnt close to the manifold, and his gas tank is clear from debris. I dont think vapor lock applies to gravity fed fuel systems but i could be mistaken.Im going to clean his entire fuel system for starters, maybe bend a new fuel line for him. He has 125lbs +/- 2-3 lbs compression on all 4 cylinders, his cap and rotor look really good. Ive noticed that when it runs it has a pronounced miss, and its consistant. Im thinking its a fuel issue any other suggestions?