Re: Re: 2 cylinders not functioning - Ferguson TO35
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Posted by glenn on October 18, 1998 at 21:55:10:
In Reply to: Re: 2 cylinders not functioning - Ferguson TO35 posted by Gerald on October 17, 1998 at 19:13:28:
: : I have a real mystery here, and I hope someone can help. I have good spark to all four cylinders, and I have good, even compression on all cylinders. Still, cylinders 3 and 4 have no power at all. I can remove the plug wires on 3 and 4 and the engine runs no differently. Does anyone have any idea where I should check next. : : Thanks much. : That happened to my MF-135 a couple years ago. It turned out to be a rocker arm lash adjusting screw had come unlocked and stopped opening a valve. If it was an exhaust valve, you'd still pump up compression on the compression gauge but the exhaust blowing out the intake of that cylinder when it opened was keeping mixture from getting to the adjacent cylinder too. You may have to take off the gas tank and the rocker arm cover to see. Could be a broken rocker arm or shaft. That part of the Continental engine is deficient in design. The oil gallery for the rocker arms is the hollow shaft, but the corks they put in the ends rot after 25 years or so and then the rockers arn't lubricated well. Eventually they break off the antirotation pin and the rocker arm shaft rotates and cuts off the rest of the oil. : Last I looked a couple years ago, MF still listed the rocker arm shaft, but no rocker arms and a Continental engine parts place near Chicago had only one of the two styles used. Just last Thursday I got the first of my new design for rocker arm shaft from the machine shop. It has steel plugs instead of corks, snap rings instead of tiny cotter keys, a 3/16 pin instead of 3/32 and a groove in the tower where the oil rises so that if it still rotates, it still will be oiled. Useable used rocker arm assemblies don't exist. : Gerald check for vacume leak at intake manifold.
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