While driving the car this weekend, was stopped in traffic, noticed pale blue smoke coming from the exhaust, quite a bit. Got the car to the house and it was still coming out of the exhaust but not near as bad. Drove the car yesterday, did not notice any smoke at all except when I pulled back in the garage could see a faint bit of smoke. Checked the oil level both times and it was at proper level. Today, I removed and replaced the spark plugs, all the ones that I removed were what I would call the proper color, a grayish color. Talked to an engine builder and he said that he thought the plugs looked ok. He suggested that I change the PVC valve which I then did. The valve that I removed would rattle [my understanding they are good when they rattle]. Just took the car on about a five mile trip and no smoke at any time and no smoke idling when pulled back in the garage. I am at a complete loss. The motor only has about 5000 miles on it since rebuild and this is the first time anything like this has happened. The motor still runs strong, might have a half-quart of oil consumption around 2000 miles. One thing that I want to askis, My PVC valve is in the left valve cover between Nos. 1 & 3 cylinder, on the right valve cover, I had put a chrome breather with no hose running to the breather [chrome aftermarket], do I need to run a hose from this hole in the right valve cover to the air breather to get a better flow of air into the engine. Could this smoke be coming from a carburetor condition?? Running the 670cfm Holley Street Avenger Carburetor. Have adjusted the settings on it, could I have screwed something up there?
Any and all thoughts would be very much appreciated as I am at a loss on this.

Thanks

 

Yes, believe you'd have a better PCV system, and as factory designed it, if you'd re-install the hose from the air cleaner to the right rear (passenger side) valve cover opening. The PCV valve is drawing from the crankcase, and the air cleaner opening provides a source of air to come into the engine crankcase area.

 

Its ok to have a crome breather in the valve cover. It wont cause a smoking problem. However, some factory setups feed filtered air to the valve cover for pcv. Not all breathers filter the air. With 5k on that moter, how many times have you changed the oil and what type of oil do you use? The reason I ask is cause I once solved a minor oil cunsumption problem simply by switching to synthetic oil. Also a carb to rich can cause a deep colered smoke. The smell of the smoke can tell a story too. Not always easy to distinguise from color.


[Modified by Jvette73, 4:37 PM 3/13/2002]