December 12, 2011 at 8:48 am #233864
I took my Chevy 283 TD out for the day on Saturday, and I noticed some smoking coming off the engine. When I stopped, it looks like there is a cap on the valve cover where oil might be coming out of.
Does anyone have some suggestions on what I should do?December 12, 2011 at 9:30 am #248202Peter C. KingParticipant
You might want to look at another 283 and see if it has the same cap. Is it the oil filler cap or a small tube?
Engines of that era usually had a crankcase breather that vented blowby to the atmosphere through a hose that hung below the engine. In the frozen North that was considered a critical anti-rust feature. The hose was eventually routed back to the airfilter housing, allowing the engine to burn the oil vapors instead of oiling the bottom of the car. That was seen by some as a plot by Detroit to sell more cars.
How much smoke are you talking about? Is it coming from the filler cap or the crankcase breather?
Is it really coming from the caps or is it moisture and spilled oil in the V cooking off?December 12, 2011 at 10:40 am #248203Dan RosaParticipant
If it not a normal crank case breather road draft vent it may be that it is not lower than the oil pan .. the second or really the first thing to look at is the valve cover gasket back then they were made of cork and they dried out no amount if tightening would stop oil leaking on the exhaust manifold and burning off . A 283 chevy was last made in 1967 if she was not rebuilt most of the gaskets were cork in that era . 307 327 and early 350 used the same basic block and hardware. Good luck ,,,,,, DanDecember 12, 2011 at 12:14 pm #248204
Drat these short daytime hours of Winter. The engine has reportedly been re-built, and by the time I got it home, it was time to cover it up for the night, too dark to look at it. I won’t have time in daylight to look at it until Saturday, and that is scheduled for the VW motor rebuild.
I’ll try to get some photos of it posted this weekend.December 12, 2011 at 12:52 pm #248205edward ericsonParticipant
If it’s not a stuck PCV valve & blown-off breather, it’ll be probably the valve cover gasket. Cork is actually good for those; don’t over-tighten them. I used to use a little spreader thing on mine to spread the force. Then I scored a pair of finned aluminum cal custom covers and my leak issues were over.
Hard to find those new now. The old ones’ll still be good though. Try the HAMB.
edsnova40889.5385185185February 7, 2012 at 11:54 am #248206
What a bumble-head I was. I failed to check my radiator water level and wonder if the low to no water level caused overheating and “blowby”. I was low on oil and water and luckily didn’t kill my engine. It look two quarts of oil and I’m getting a raditor flush or at least try to drain the rusty water out and put in some anti-freeze rust prohibitorFebruary 7, 2012 at 9:07 pm #248207edward ericsonParticipant
Hah! That should help!
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