Results 1 to 4 of 4

Thread: New motor concern - smoke on start-up

  1. #1
    Blessed be the lowered RickS's Avatar
    Join Date
    Nov 2002
    Worshington State

    New motor concern - smoke on start-up

    As most of you know, I have a new engine with about 1700 miles. The car is driven pretty much only on weekends (insurance and Seattle stop and go traffic dictate my driving habits) and when the car has sat all week and is started, I am still getting nice blue cloud of oil. I know the engineering dictates some oil will still leak down into the cylinders, but I am a little concerned at the amount. After a complete rebuild, I anticipated a little smoke at start up but the cloud - when cold, has me alarmed. It this right, or after a few thousand miles will the rings seat better and decrease the smoke? As an aside, when the car is warmed up, the amount of smoke coming out is negligible.

    Thanks, Rick

  2. #2

    I'm not the expert here, but see the other post on gas getting in the oil. Is your engine MFI? If so, mine had a clogged/bad injector that was letting extra gas go unburned, running down into the crank and mixing with the oil. That'll make the oil burn. Also, since its a new rebuild, have you done your oil change and valve adjustment yet?
    Chris Purpura @civilizedmisfit
    Member #479
    Current Cars:
    1972 911T aka The "Civilized Misfit" Build
    Miss February - EarlySRegistry 2023 Calendar
    1968 911S Ossi Blau/Beige Corduroy

    Past Cars:
    2019 911 Carrera GTS (sold, no regrets)
    73S - #1100 (restored and now somewhere in Europe)
    1997 993 Carrera 4S Black on Black (sold)

  3. #3
    Hi Rick:

    Having gone through this drill many times over the past 30+ years, I can tell you that until your rings have seated, your engine will smoke a little as long as it was assembled properly.

    My best advice to you is to spend a weekend driving that thing and breaking it in correctly. Make a trip to Spokane and back, varying your speeds all the time and making WOT bursts from 2000-5000 an back down that will help the rings to seat.
    Steve Weiner
    Rennsport Systems
    Portland Oregon

  4. #4
    Blessed be the lowered RickS's Avatar
    Join Date
    Nov 2002
    Worshington State

    Well DUH

    Very late breaking update with a big DUH factor. I must first preface... With my old S motor, it had a manual fuel enrichment switch for start up. My mechanic suggested that I press it for 4 secs prior to cold start to get enough gas, which worked great. Well, the light bulb went on with my problem with the new motor, as well as the characteristics of fouled plugs. I figure out that if I only press it for a second or two, the engine starts up relatively cleanly. I would rather take my stupidity (or my mechnic's inability to communicate what should be the obvious) versus some type of mechanical or seating/glazing problem. Duh.

Similar Threads

  1. Yikes. Smoke.
    By targajoe in forum Technical Info
    Replies: 7
    Last Post: 06-26-2011, 09:20 PM
  2. White smoke on start up- and that's my car, not me personally.
    By Ghost Chaser in forum Technical Info
    Replies: 8
    Last Post: 10-13-2010, 02:25 PM
  3. Solving oil smoke in heater problem
    By Torque in forum Technical Info
    Replies: 1
    Last Post: 07-13-2009, 11:52 AM
  4. Backfiring with Black Smoke
    By FL-Frank in forum Technical Info
    Replies: 9
    Last Post: 07-13-2007, 10:31 AM
  5. Does you early car smoke?
    By daepp in forum Technical Info
    Replies: 20
    Last Post: 04-04-2007, 01:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.