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How’s it going guys, new member here. I just picked up a 64 Impala SS last week that has an LS swap. I was told its a 5.7 out of a 2002 Camaro SS.
I drove the car to work today to get to know her better, and realized I had some light smoke billowing in from the dash vents when stopped. Smelled like oil/fuel. Once I got home I popped the hood and saw there was smoke blowing out of this 3 inch-long open ended hose with the motor running.
If anyone could let me know what it is exactly and how I could remedy the issue I’d appreciate it! The motor runs perfectly, no rough idle or anything else besides the light smoke flowing out of the hose.
Last edited by LS64Impala; Oct 10, 2023 at 09:17 PM.
Yeah that's for your PCV line off the valve cover. Pretty simple to connect that end to a hose and then to an inline PCV valve before entering the intake. I'd put a sealed catch can between the hose to limit the amount of oil that gets into the intake manifold. There could also be a PCV valve right there on the valve cover so I'd check that out.
Last edited by 01CamaroSSTx; Oct 11, 2023 at 01:11 PM.
Yeah that's for your PCV line off the valve cover. Pretty simple to connect that end to a hose and then to an inline PCV valve before entering the intake. I'd put a sealed catch can between the hose to limit the amount of oil that gets into the intake manifold. There could also be a PCV valve right there on the valve cover so I'd check that out.
Thanks. It appears to be just a 90 degree fitting connected to a short plastic tube. So I would put a pcv valve in place of that fitting (or inline pcv), and run a hose from there to this port on the front/drivers side intake? It was capped. Also it’s a stock motor with headers and occasional driver, would I still need to add a catch can or can I get by with a direct hose?
If it's just a stock engine then no real need for a catch can but certainly wouldn't hurt. I'd put that back onto the valve cover and run a hose off there towards the intake manifold with an in-line pcv valve just before the intake manifold. I've attached an image of what the 4th Gen Fbody lines look like. You'll notice the in-line pcv valve at the end of the line before going into the intake manifold.
Before you go and buy/build stuff to fix your issue, have you looked around the rear of the engine (including under) to see if there a hose/connector where that open ended hose might connect? Maybe the whole set-up is here and that hose just came loose, or broke off. If you are lucky, the hose for that 90° fittings is just hanging somewhere...
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What is this hose for? 
