B&S Intek smoking bad

Discussion in 'Mechanic and Repair' started by john_incircuit, Aug 14, 2008.

  1. john_incircuit

    john_incircuit LawnSite Senior Member
    from NC
    Messages: 310

    My not even 12 month old Briggs and Stratton 121602 0349 (purchased it as a take off from the small engine warehouse) is suddenly smoking badly. I put around 120 hrs on it, changed oil and cleaned the filter every 25 hrs. Three weeks ago I only could smell a hint of oil, now, it is smoking big time. Is there a chance that this is only the head gasket, or is it better to pay another $110 for the replacement engine special?

    Thanks for the help!!
  2. Phil G

    Phil G LawnSite Senior Member
    Messages: 844

    Hi, that's not really a lot of hours for one of these. Could I suggest you try these.
    Make sure oil is not overfilled
    Run engine without air filter and check smoke. Run 4-5 mins
    Run engine without exhaust and check smoke. Run 4-5 mins

    Has the machine been tilted over? This can cause problems.
    Check breather assy.

    Personally I would not spend too much time on it if a replacement can be had for $110, that's way cheap compared to UK prices.

    Keep old unit for spares after draining out the oil.
    Good luck Phil :)
  3. Bill Kapaun

    Bill Kapaun LawnSite Senior Member
    Messages: 964

    Since that's an OHV engine, I'd suspect head gasket.
    Often, if you remove the valve cover and start it, you can see a combustion "mist" blowing out the cylinder near the push rods.. Have a rag handy!
    A head gasket is listed at $3.75 or the "kit" for $7.60 at the Briggs site.

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