Quote:
Originally Posted by Rich72C10
hmm, okay I looked up exhaust manifold heat riser, which seems I have asked about before when I saw a posting with a strange "pipe" coming off the exhaust to the stock air cleaner. I don't have that "stove pipe" thingy or anything to get stuck  |
Ok first photo is a heat riser. This is a 1964-78 Chevy heat riser. The second photo is a 72 Chevy air cleaner assembly on the engine. The vlave in the air inlet is the vaccum activated heat diaphram. If the vaccum diaphram is bad the valve in the snorkel will not open. It is normally closed. That diaphram is replacable.