What would cause excessive blue tint smoke to come out of exhaust

Tiny
APAC408
  • 1995 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
  • 220,000 MILES

I recently but a new head gasket, new valve, seals, new camshaft seal, new valve cover gasket and spark plug seals, and my car is still burning a large amount of oil. Would it be my oil control rings that are bad

Do you
have the same problem?
Yes
No
Monday, August 27th, 2012 AT 3:00 AM

33 Replies

Tiny
DRCRANKNWRENCH
  • EXPERT
  • 3,443 POSTS

It is probably the piston rings letting oil get by and into the combustion chamer. You took care of the head gasket and valve stem seals, so that is about all that is left.
You could do a compression test and ee if it is below spec then you would know if you might need to re-ring it which is not hard to do in a Honda. You would have to re-do the head gasket and then pull the crank with pistons out the bottom by removing oil pan. Then you would hone cylinders, measure and get proper rings for a good seal. Remember to keep parts in the same order when dis-assembling it as they must go back into the same place when assembling it.

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 3:05 AM
Tiny
APAC408
  • MEMBER

Seeing as I am short on money would it be wise to just change out the oil control ring or since I am down there just rering the whole thing

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 3:22 AM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

You have a bad leak and you are not addressing it correctly. I have told you to rectify the leak and run the engine to get residual oil out of the exhaust system but seems you do not believe what I have told you.

Have a good day and good luck.

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 7:07 AM
Tiny
APAC408
  • MEMBER

Look guy no offense but I did fix the leak and I did run my engine for about a couple hours and it was still blowing lots of clouds of smoke. I have nothing against your advice its just I need a new look on things since I have done everything you said to do now. One more piece of information I did take off the head again and when I pulled it off there was nothing but oil in cylinder 2, 3, and 4. Cylinder number 1 was fine

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 2:41 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

I would recheck the valve seals. Make sure you have the correct size.

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 6:03 PM
Tiny
APAC408
  • MEMBER

The valve seals are felpro they are one size fits all

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 10:40 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

With so much oil in cylinders, I don't think they are fitting that well. For this engine I would only use OEM valve seals.

Was this
answer
helpful?
Yes
No
Monday, August 27th, 2012 AT 11:09 PM
Tiny
APAC408
  • MEMBER

Just throwing this out there but do you think it could be that some of the valves are getting stuck from carbon build up therefore letting oil seep into the combustion chamber. When I took off the head the last time my valves were pretty black and had lots of build up on it

Was this
answer
helpful?
Yes
No
Tuesday, August 28th, 2012 AT 3:16 AM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

No. Carbon buildup would only affect engine compression which would result in rough idling, difficult starting and performance issues.

The valve seals are to prevent the oil from getting into the cylinders and exhaust system. If the valve guides are worn, which are rare for this engine, they would result in leakages through the seals as the valves would be tilting when in operations.

Was this
answer
helpful?
Yes
No
Tuesday, August 28th, 2012 AT 5:29 AM
Tiny
APAC408
  • MEMBER

Ok so in doing a little research I found that my pcv valve and breather box can also be causing oil do burn off. When I took off my pcv valve there was oil in it and all in the tubes when I disconnected the breather box off there was nothing but oil in it my question is if I clean it out would this have been the problem also too I replaced the valve seals with oem ones and it was still burning oil. Also did a compression check and all cylinders blew 180

Was this
answer
helpful?
Yes
No
Tuesday, August 28th, 2012 AT 6:28 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

You need a little trime for all these oil in the system to clear off. Whatever oil you can clear from the breather would reduce the time but this is not the main cause of the oil burning.

I would not do anything else for now except let the engine run for at least an hour or so to see if the smoke reduces. Remember to check the oil level. With what you have, a 3 day running period would be just nice before you come to any conclusion.

Was this
answer
helpful?
Yes
No
Tuesday, August 28th, 2012 AT 6:33 PM
Tiny
APAC408
  • MEMBER

Okay

Was this
answer
helpful?
Yes
No
Tuesday, August 28th, 2012 AT 6:55 PM
Tiny
APAC408
  • MEMBER

Okay so I came to the conclusion that while letting it run a guy came up to me and told me that it is the valve seals put that they were probably not seated right or may have pushed up while installing so have to take apart and reseat them in

Was this
answer
helpful?
Yes
No
Wednesday, August 29th, 2012 AT 2:23 AM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

When installing the valve seals, you MUST not force them in. They gets seated easily while tapping on a 11 mm socket or equivalent. If you use too much force, the seals would get damaged.

Was this
answer
helpful?
Yes
No
Wednesday, August 29th, 2012 AT 10:31 AM
Tiny
APAC408
  • MEMBER

Okay when I first installed them I just pushed them in with my fingers as tight as I can

Was this
answer
helpful?
Yes
No
Wednesday, August 29th, 2012 AT 3:21 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

Actually that should be sufficient but pushing on the seal lips can damage them. Did you check if all of them were seated correctly?

Was this
answer
helpful?
Yes
No
Thursday, August 30th, 2012 AT 7:52 AM
Tiny
APAC408
  • MEMBER

How do I check to make sure they are seated correctly

Was this
answer
helpful?
Yes
No
Thursday, August 30th, 2012 AT 3:05 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

Note the seated position. They should be uniform for each valve and ensure you are not able to pull them out after installation. If you lightly tap them in, you can feel if they are seated fully when the tapping feel is different.

If you can measure the height of each valve, that would be more accurate.

Was this
answer
helpful?
Yes
No
Thursday, August 30th, 2012 AT 6:02 PM
Tiny
APAC408
  • MEMBER

Okay I am definitely stumped, after pulling apart the cylinder head again the valve seals weren't seated correctly reseated made sure they were all nice and tight and reinstalled everything. Ran it for two hours and still smoked. The funny thing about it this time is after I turned it off for a while and started it back up it wouldn't smoke that much at first start than a minute or two later it would start smoking a little bit more and than when I gave it a little throttle thats when it went back to its normal smoking routine. Officially stumped

Was this
answer
helpful?
Yes
No
Saturday, September 1st, 2012 AT 8:05 PM
Tiny
KHLOW2008
  • EXPERT
  • 42,044 POSTS

That is normal. There are residual oil in the system and it needs time to clear up. This is what I have been trying to tell you all along if you do not have problems with valve seals.

Give the engine a few hours of running time, if driving time is short, it might take forever to cealr up the smoke. They would come only after the exhaust system heats up.

Was this
answer
helpful?
Yes
No
Saturday, September 1st, 2012 AT 8:13 PM

Please login or register to post a reply.

Recommended Guides