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#4 plug keeps fouling

 
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bugpack



Joined: 01 Jun 2008
Posts: 178
Location: audobon park area

PostPosted: Sat Dec 22, 2012 4:26 pm    Post subject: #4 plug keeps fouling Reply with quote

my case is a 60 something 1200 case.
heads are from 60 something 1600 single port.
009 vac distributor
pict 28 carb
tune up done in oct. valves set to .006
motor runs strong and is tight

# 4 keeps fouling plugs. i have been able to swap out plugs and it runs fine again. this time it keeps fouling. i have the plug out of the motor right now to let the fuel evaporate.
looking for some ideas

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hakunamatata
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dssbk



Joined: 03 May 2007
Posts: 110
Location: Spokane Valley

PostPosted: Sun Dec 23, 2012 11:55 am    Post subject: Reply with quote

Is it fuel or oil fouled?
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bugpack



Joined: 01 Jun 2008
Posts: 178
Location: audobon park area

PostPosted: Sun Dec 23, 2012 1:52 pm    Post subject: Reply with quote

fuel. did a check on the plug and found it wasn't sparking at all. so i replaced it and the bug is back running.
the other times it was oil.

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Bad Bug Two



Joined: 23 Feb 2007
Posts: 88
Location: Spokane, WA

PostPosted: Sun Dec 23, 2012 3:24 pm    Post subject: Reply with quote

bugpack wrote:
fuel. did a check on the plug and found it wasn't sparking at all. so i replaced it and the bug is back running.
the other times it was oil.

What brand and part number are you using on the plugs? If it is fouling out because of oil, you might get away with running a hotter plug in that cylinder until you can afford to fix it correctly.

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dssbk



Joined: 03 May 2007
Posts: 110
Location: Spokane Valley

PostPosted: Sun Dec 23, 2012 5:12 pm    Post subject: Reply with quote

If its oil fouled, it could be rings or valve guides, I would rule out a bad spark plug wire first. Start it when its dark out, and take a look in your engine compartment to see if you got spark jumping from the wires to ground, also check to see if your distributor caps ok and not cross firing.
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bugpack



Joined: 01 Jun 2008
Posts: 178
Location: audobon park area

PostPosted: Fri Dec 28, 2012 6:48 pm    Post subject: Reply with quote

This time around it ended up being a bad plug
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