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525 Posts
I've got a question that's bugged me for awhile. What causes an engine to run faster as it heats up? My 352 runs normal at startup. It will idle up on the the fast idle cam on the carb and as it warms up and the choke opens it idles down like its supposed to. Then after a few miles it will idle up way too fast. Like about 1300 or 1400 rpm