Join Date: Apr 2005
Location: Pensacola, Fl. U.S.A.
Since it`s leaking from the rear side of the back carb, the issur most likeky is too high a fuel level in that carb. That side is the low end of all the 4 systems so I would lower the fuel first.
Spitting is caused by reversion in the intake system commonly caused by improper valve timing. Commonly too advanced cam timing. On these cars the cam timing marks are at 102 / 102. However a later TSB indicated they should be 104 / 104. If they are stock cams set at 102 check that valve lash, particularly # 4 is set at .018 intake ans .020 exh. Smaller lash settings would have the same effect of too advanced LCs on the cams.
Non stock high overlap cams have to be set at wider LCs as well or similar issues result.
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