N Board Forum - Expanded Thread Page

Subject: 8N Running Rough/White Smoke

[Back] [Return to Top of Forum]

Rick Gowdy    Posted 06-12-2019 at 09:38:12 [URL] [DELETE]        [Reply] [Email]  
  • 8N Running Rough/White Smoke
  • Hi All,

    Been a while as I've gotten better at diagnosing and fixing my "52 8N. Started fine yesterday then died after 2 mins. When I restarted it sounded like maybe only a couple cylinders firing, very slow (put, put, put). Increasing the throttle had no effect. Then white, smelly smoke started. Ran it last weekend for several hours mowing with no issues. Thoughts? Thanks.

    Rick

    Richard Gowdy    Posted 06-15-2019 at 04:36:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N Running Rough/White Smoke
  • Still no sign of coolant in oil but did discover that I accidentally added 2 quarts of 5w 30. Any chance that caused this problem?

    steveVa    Posted 06-12-2019 at 10:12:50 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N Running Rough/White Smoke
  • Sounds like antifreeze getting into cylinders. Is it a sweet smell?
    If so you have a blown head gasket.

    Rick Gowdy    Posted 06-12-2019 at 10:21:07 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N Running Rough/White Smoke
  • Thanks, Steve.

    Not sure I'd say "sweet," but the smoke is pretty thick/strong if that makes sense. How big/difficult a job is it to replace the head gasket? Special tools required?

    steveVa    Posted 06-12-2019 at 12:49:02 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N Running Rough/White Smoke
  • A head gasket on a flat head is pretty straight forward as you don't have to deal with rockers and push rods.
    The hardest part is getting wires, generator, and oil filter out of your way so you can get to the head bolts. If you have studs the tricky part is lifting the head straight up high enough to clear the studs with the hood and gas tank above it.
    You may try torking the head, but once you get a leak of the gasket it is usually too late. I use copper coat on head gaskets and have never had one fail.

    steveVa    Posted 06-12-2019 at 12:53:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N Running Rough/White Smoke
  • The only special tool would be a torque wrench for the head bolts.

    Rick Gowdy    Posted 06-14-2019 at 08:03:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N Running Rough/White Smoke
  • Thanks, Steve. Oil looks okay, but still runs the same with the thick white smoke. Fortunately I have a kind neighbor with a shop, all the tools and know how. Now I just have to find the time!

    [Back] [Return to Top of Forum]


    Top