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Manifold heat control valve
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Posted by CNKS on December 11, 2006 at 10:06:58 from (204.249.178.135):
I may be the only one on this forum dumb enough to actually take one of these things apart and try to fix it. The 460 has a manifold heat control valve. Flapper was stuck open, vertical. In my efforts to free it I broke the weight. Bought all new parts, weight, valve, shaft, spring. Several ways to install. The valve is loose on the shaft and has to be screwed or spot welded on. I assume that when cold, the valve (flapper) is attached to the shaft so that the flapper is vertical allowing exhaust gas to heat the incoming fuel-air mixture in the intake manifold. At the same time the weight is vertical, there is tension on the spring. As the spring heats it expands (loses tension) allowing the weight to close the flapper, thus blocking the exhaust gas from the intake manifold -- Someone tell me if this is correct or wrong. I don't think this has been discussed before.
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