plug the exh. and intake and put 5 to 10 psi air in and see if it leaks out.
Spent some time before I left the shop starting the leak down test. Off the bat it's leaking good out the exhaust manifold gasket (between the cylinders and manifold) I need to fix that first before I can listen for any other leaks. I was hoping for something major though when I hooked up the tester and I am still without an answer at this point.
Nick
Nick
You should plug exh. at the jug anyway. That way you can isolate the problem cylinder.
Ok.... I think I found the problem. After removing the engine and hooking the leakdown tester to it and flipping the engine upside down, A lot of gas came out of the lower end on that cylinder. Now as I'm scratching my head wondering how that much gas got into the lower end, I ask my employee who was helping put the engine in, How the hell did that much gas get in there. He says I wonder if when I mixed up the gas lines on the fuel pump it could've done that? I didn't even know this had happened, he put the vacume line from the lower end on the pto carb outlet. Now that I have drained the gas out of the lower end, It has suction when I roll the engine over by hand. Now I wonder if he could've hurt that fuel pump at all by doing that??? Is it possible for a fuel pump to pump out too much fuel on one carb? If that vacume line pressure blew out something inside the pump?? Now whats weird is why did only the pto cylinder not fire?? If gas went into the lower end through that breather/vacume line, Wouldn't all three cylinders act the same? Other option is the float stuck open, But I changed out the float and entire carb while troubleshooting. Unless the gas was already down there and it wouldn't have mattered. I did at one point pull out the reeds and blow air down in the lower end to see if any gas was down there and nothing really came out, But maybe I didn't try hard enough?? So not sure if I should feel dumb about this, Or kick my employee's *** lol. Shame on me I guess.