Thread: still fouling plugs

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I have the mechanical secondary carb.The plugs clean up after a pass or two but when idling around the house they blacking up and start to foul.I have 80 to 85psi of oil pressure when cold but with the carb running rich I have to idle it up some so the pressure climbs to 90 or better untill it gets warm then it settles down to about 40psi for normal oparating temp at idle.It does smoke a little just when i first crank it up and it does seem like oil smoke (white) not black from fuel.Thats whats so strange it fouls plugs but I have never seen black smoke out the exhaust from excessive fuel.
I made seven passes at the track two weeks ago and it never smoked while making a pass.So could oil be fouling the plugs?When I ran the cranking compression they were all around 185psi but that was a while back i havent checked it in awhile.And I have been running pump gas so far.This is a street legal car but I plan on doing some bracket racing with it mostly not to much street driving.
THANKS TO EVERYONE FOR THE HELP AND I WISH ALL A SAFE AND HAPPY THANKSGIVING.

Originally Posted by DennyW

Now you gave it away. Yes, your valve guides are loose. That's your problem !!

He said the heads are new . Maybe the seals are damaged ? But you would think that the new guides would stop most of the oil .

I know that on my 1989 pick up it smokes on the start up . And for sure the valve guides are worn . but its getting up in miles to . Maybe his forged pistons have some blow by on start up till they warm up and expand .

Originally Posted by DennyW

New things can be bad also. From his discription, that is a common valve guide problem. If it was seals, believe me, that thing would smoke more than just start up, and then, not clear up after the start.

((I pushed the seals back down))

New/Means= New to him, said they were new, could be new, but worked, or reworked incorrectly. Kind of like someone saying it is a rebuilt motor.

Not rebuilt.Brand new heads.And the seals on some of the valve stems were up on the stem after running awhile not down where they should stay but not on all the valves.They are the positive stop seals.