I hear a noise like someone sucking air though a straw when I turn my car off. the engine shuts, then I hear a "slurrp." Loud, almost like a whoosh, definitely an air sucking in or releasing, sounds more like a sucking in. Happens sometimes when I shut off my engine. It is a Chevy small block.
I recently re-did my own radiator, and had to shoehorn one in from an Astro van. They did not have one available for my 1990. Mine has engine oil, transmission cooler, AND radiator hose conenctions, and that is the only other one that did. I shoehorned it in. That one has a taller neck, so the result was interesting. Why do I mention that? Because I took off the stock air intake tubing, and I left on the elbow that has the air temp sensor. No more air filter, or air filter housing, that hose just hangs free now. I traced it back to the valve cover, on that engine bank. It also sometimes hesitates when warming up, as if it has a vacuum leak. The whole engine slows, sometimes I hear the suck noise start halfway, then the engine picks up again.
FWIW, this engine has gasketing issues, and it could be a cracked water jacket, cracked block, cracked head, blown head gasket, or all of the above. Thus I will start another thread, called Blue Devil questions.
Is anyone more familiar with this air-suck sound, anything that I should know?
I am also having issues with the knock sensor, the wire is clean off, is not attached at all, and is nowhere to be found. And I do not know where the connection is, to make it.
I recently re-did my own radiator, and had to shoehorn one in from an Astro van. They did not have one available for my 1990. Mine has engine oil, transmission cooler, AND radiator hose conenctions, and that is the only other one that did. I shoehorned it in. That one has a taller neck, so the result was interesting. Why do I mention that? Because I took off the stock air intake tubing, and I left on the elbow that has the air temp sensor. No more air filter, or air filter housing, that hose just hangs free now. I traced it back to the valve cover, on that engine bank. It also sometimes hesitates when warming up, as if it has a vacuum leak. The whole engine slows, sometimes I hear the suck noise start halfway, then the engine picks up again.
FWIW, this engine has gasketing issues, and it could be a cracked water jacket, cracked block, cracked head, blown head gasket, or all of the above. Thus I will start another thread, called Blue Devil questions.
Is anyone more familiar with this air-suck sound, anything that I should know?
I am also having issues with the knock sensor, the wire is clean off, is not attached at all, and is nowhere to be found. And I do not know where the connection is, to make it.
