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When the intake was installed, did you note the spacing of intake to head?
Place intake on engine, no gaskets and slide it to one side, measure distance using feelers from manifold face to head face. If it more than about .060-.080 you may need thicker intake gaskets. No matter how much you tighten the intake, up to cracking it, it will not seal.
Do the simple stuff first to rule that out. Vacuum leak under/around carb, linkage hanging up would be my first check.
Set timing to about 15* BTDC and leave it. Recheck it if you get the idle down because you're probably already into the mechanical curve at 1500 rpm. My guess it's gonna want about 20* BTDC to run well at idle.
That's my guess. Something's bass ackward.
Last edited by MRHWS; 01/21/12 11:26 PM.
