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Engine blue smoke after engine swap?

Tiny
NIK1234554
  • MEMBER
  • 2005 HONDA CIVIC
  • 1.7L
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
After I changed the motor for a good running one and after I put it in my car after like one hour of driving it was doing the same thing.

How can I fix this problem?
Friday, June 23rd, 2023 AT 7:44 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,968 POSTS
It could be the oil from the last engine is still burning off inside the exhaust system, I would keep driving it to see if it gets less and less in time.

Here is a guide that can help as well:

https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust

Please go over this guide and get back to us.
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Friday, June 23rd, 2023 AT 12:17 PM
Tiny
NIK1234554
  • MEMBER
  • 4 POSTS
I drove it for 4 hours and it the same thing. Plus, I removed the spark plugs and there was some oil on the cylinder.
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Friday, June 23rd, 2023 AT 12:42 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,968 POSTS
It sounds like the new engine has the same problem as the old engine. It sounds like the cylinder with oil has a broken oil control ring. But I would replace the PCV valve in case the spring is broken, and it is sucking oil in. Check out the images (below). Please let us know how it goes.
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Saturday, June 24th, 2023 AT 11:09 AM

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