Blue smoke....
Civic1200 Discussion Board: : Blue smoke....
Hope it goes well nathan! Let us know your results.
This weekend we should find out, I will get the tool....I bought new rings and head rebuild kit...cross your fingers
-Thanks eh...
You don't need a mechanic to do a compression test, unless you're wanting to do a leak-down test. Compression testers can be well under 20 bucks, and I've used mine well over a dozen times since I got it last year. A CLT test will be more insightful on the situation, but like I said earlier, good compression+smoke= most likely valves, bad compression+smoke= rings, or rings and valves. Best of luck,
-Jarvis
OK, so I will get a compression test done. Then most likely do rings. Cuz there is a lot of smoke....it's embarrasing even starting it 
. It stopped after I hit the highway taking it home, it took about 15 minutes and high revs to finally stop it...or at least make it "normal" old car blue smoke...but then the next day turn it over and plumes of smoke pour out
The guy I bought it from, possibly pulled the head himself (it all seems a little unclear) and just got a shop to machine it. He has told me rings, and valve seal kit...time it as it was timed by ear....and it should be fine...
Luckily it's not my daily driver...yet. I still have my 82 civic that drives and runs like a dream...this one will hopefully take its place.anwyay.
This thread has been great. Thanks for the help..
Sorry about having to go though emissions, but you're just going to have to live with this problem until you throw some new rings at it. This sort of thing happens on 90% of all high milege cars having the top end rebuilt. If you had done a cylinder leak down test when you discovered that you had poor compression you would have been able to pin point that bad valve before you even took your head off.
If you do one now, you'll hear air seeping through the rings and into the crank case. I also am willing to bet that a simple compression test now will also show that your compression, while improved, will be significantly less than what you would really want. So it's a toss up. Drive the car until you get your project done, or start another project. If there is no ridge on the cylinder walls, you could probably do the whole job in a weekend. Good Luck!
yes worn guides or valve seals DO produce clouds of blue smoke when the engine is cold but when gets wormer it`s off or under heavy turning or when you shift up hard (like when racing )
Blue smoke = rings.
Worn guides or guide seals do NOT produce clouds of blue smoke.
It's pretty common to rebuild a head so the valves are sealing well and suddenly find the thing smokes like mad.
Well, the guy I bought it from told me most of that. Its just so much smoke I figured it could be bad, but you figure mostly seals should fix it up, than thats great. I will pull the head and have at it. While the heads off, I'll do piston rings to I guess....
I think I found the part #'s
FelPro ss72532 Valve Stem Seal
FelPro hs21198PT Gasket Set
FelPro VS26083R EB3 Valve Cover Gasket Set
FelPro VS26083R1 EB3 Valve Cover Gasket Set
I don't know if these are any good. Or if there are any more things I should look for. But for future keyword searches I hope it helps 
1st possibility-As the engine wears, the head and cylinders wear at a compatible rate. So low compression caused by valves meant that low compression and blowby in the cylinders was acceptable and unnoticable. Now that your valves are creating good compression, it's possible that the increased cylinders pressures have shot out your rings, so smoking quits once the pistons/block/rings expand to take up the clearance.
2nd possibility-The bent valve was stuck open or closed, but damaged the valve guide. Now that the cylinder's firing, and a new valve is in place, the oil leaks right by and burns in the combustion.
3rd possibility-Bad valve guide seals(as eric just said)?
Anyways, there's lots of other possibilities, so let's try to narrow it down. Is there more smoke when you decelerate or accelerate? If there's more when you close the throttle, then the sudden increase of vacuum is sucking in oil through the intake valve and burnign on combustion. If there's more on acceleration, then it's more likely to be a bad ring.
If you have good compression, then it's more likely to be a valve guide problem(since they're shielded from the combustion chamber on compression), but if you have bad compression, it's more likely to be the cylinder/rings. If you add oil to the cylinder and compression goes up, then it is definitely worn rings/cylinder.
Best of luck, and let us know about your results.
If you had the head rebuilt, they should have done seals at that time? You can replace the seals in the car if you have to, you will need an air compressor, compression gauge hose, and a valve spring compressor tool, and of course, the correct intake and exhaust seals. If the motor has some miles, it is probably rings, the oil rings get stuck in there groove, I just went through this on my 75 cvcc. I rebuilt the motor in the car, I did everything but the main bearings, because I did not pull the engine. I no longer burn oil, and have awesome oil pressure. Hope this helps.
Eric
the EB3 civic i bought lost compression in a piston so I got the head rebuilt. It was a valve that gave way, It was bent. I had the head machined, new head gasket and valve. That took care of my compression problem but afterwards it started burning oil like crazy.
It basically burns crazy amounts of blue for about 10-15 minutes until you drive for quit awhile and it gets fairly warm. Then it burns very little blue....
There are no visable leaks on the block. Would it be a case were the compression went up and blew out the valve seals?
I also read I should check the plugs and see if it's maybe the rings...if the plugs are oily = rings, if not valve seals?
How about valve guides? are there still parts available?
I want this to be the new daily driver until the 75 project is done maybe next year.....so it has to pass aircare.
Oh and it was aircared every year until this work was done.