BenzWorld Junior Member
Date registered: Jun 2015
Vehicle: 1965 220SEb manual
Location: Fort Collins, CO
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
New member, New fintail purchase w111, 1965 220SEb, blue smoke :-(
Hello fellow vintage Mercedes nuts. I could use some of your expertise if possible. A couple weeks ago I bought a 1965 220SEb manual in Arizona and drove it back to Colorado about 15 hours. The body is in amazing shape and overall the Benz has been pretty well maintained. It is very hard to find any rust on the underbody or anywhere on the car.
The seller said that blue smoke never came out of the tail pipe and as I was driving it home I checked on startup in the mornings and I saw none. I was inclined to believe the buyer because it is such an obvious thing to see. It definitely was not coming out stationary by revving the engine and so I kept my eye out for a couple morning startups and then forgot about it. Didn't notice any blue smoke at gas stops nor when I first started the car before purchasing. Truthfully, I wasn't looking all that hard either.
The car drove strong 15hrs from Arizona with not a single hiccup. After getting it back and starting to drive it around town I am now seeing blue smoke regularly, not on morning startups, but after the car has been driven and then sitting for as little as 10 minutes. It is usually one medium size puff of blue smoke lasting about 2 seconds of startup gassing. It is definitely blue smoke.
I crossed my fingers and changed the oil, put BG MOA in the oil, drove it more, to no effect. From the service receipts the car had the top end rebuilt in 2006, including new rings and pistons. Since then the car has only had 10k miles put on it.
I checked the compression warm today and here are the results.
compression test 1/130psi -- 2/120/140 --- 3/132/152 -- 4/135 -- 5/130 -- 6/140
On the sets of three numbers I added a bit of oil to cylinder before 3rd reading.
Finally my question! Is there anything that could be causing this other than the valves or valve seals needing work? According to the seller, Since 2010 the car was driven regularly only in the winter in Arizona and then driven one day a week during summer to keep it moving.
Not quite sure I understand why it doesn’t smoke in the morning but does after driving it. Even after driving it, sometimes it smokes, sometimes not.
Why would the top end be having problems after only 10k? It also passed emissions, which is only an idle test in Colorado.
Shouldn't the compression be better? My mechanic mentioned that the rings might not have seated properly, or yet. Not sure how to test for that.
Thank you for any help!