power valve

pjc360 said
Are you sure you have a dead cylinder and it wasn't just the carburetor fouling the plug on that cylinder from being extremely rich? My quick fuel right out of the box foued 3 plugs on my engine, I live in Idaho, 4000 feet above sea level and I had to lean my carburetor down quite a bit.
I'd get a new set of plugs and get some larger idle air bleeds and some smaller idle feed restrictors installed into the carburetor and see if it will run without fouling plugs then. I would also put your vaccum advance on a manifold vaccum source on the carburetor to give you more timing at idle to burn the mixture , that will help keep the plugs a lot cleaner too. That stroker of yours will like a lot of timimg at idle, probly 28-30 degrees.

Unfortunately there is a dead cylinder. At one time it was firing but this engine has been through several build changes with very few miles on it. I know it was firing at one point but here lately with the fouling plugs I've been pulling plugs out left and right and noticed the clean number one plug. I was hoping for the best, but with the camera down the hole I had my son turn the engine over with a large ratchet while I watched the screen and as the piston went up and down with the oil pressure oil would pool up at the bottom of the piston. I don't know if it's from all the gas washing down the cylinders but I am pretty sure oil isn't supposed to be on top of the piston. I am afraid I will have to take it apart again.