Question about 1990 Honda Civic

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1990 Honda Civic Hatchback, 1.5 EFI, runs great but smokes like a chimney. Its burning oil but doesn't leak. Changed head gasket, but no dice, didn't solve the smoke. After changing head gasket I noticed a considerable amount of oil in air intake tube between air filter and throttle body. Trying to figure out why oil is being (blown, or sucked) into intake. Compression is 152, 145, 140, 150. Bad PCV valve? = To much pressure in crank case causing oil to blow into intake tubing from valve cover? Buddy works at auto store and is getting a new PCV valve, but any suggestions? 4/19/09

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  • heyjb18 Apr 19, 2009

    Did not put new valve seals in head.

    Could be worn piston rings? hmm...Dont have time or money to replace rings and have cylinders honed. I might try some enginge treatment oil, like "restore". But for sure going to replace PCV valve. Its cheap. Thanks! any other ideas!?!?

  • heyjb18 Apr 19, 2009

    Thanks, will definitely try to find one. Thanks again!

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Did you put Valve seals in the head???
Other than that the PCV is a good start...
But it sounds like the oil rings on the pistons to me.

Posted on Apr 19, 2009

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  • Find a BG product shop - see if they do the Engine Restoration Service

    This is a service where they put a cleaner in the oil and it cleans the carbon out of the rings so they will reseat.
    This is your cheapest fix for now and I would have it done EVEN with changing the PCV Valve!

    Good luck!


  • Not a problem! BG Makes great products...
    www.bgfindashop.com


  • Ohhh wanted to tell you that you are looking about 150!
    BUT I will tell you being a mechanic... IT WORKS WONDERS.
    Took my buddy from 75psi in 1 cyl to 140!
    Well worth the money! Closest I have found to rebuild in a can!
    LOL Maybe I need to go to work for them!

    Also check your timing belt. IF you cam is retarded too far it will cause it to ****/ burn oil!

    Hope this helps


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