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Rich idle & Lean crusin'

To: mgs@autox.team.net
Subject: Rich idle & Lean crusin'
From: "JOHN WHITEHEAD" <WHITEJ@sunynassau.edu>
Date: Mon, 16 Oct 1995 12:33:55 EST
Forgive me if this is repeat, but I have not seen any replies to the 
original post 11 days ago.  Around the time the list changed (for the 
better - digest!!!).

Situation:

Car:  1973 MGB, dual HIF4's, Crane Hi-perf. CAM, Timing 11 deg. adv.

    Carb's rebuilt 6/95 (were working great until we ate rod bearing)
    Engine rebuilt 8/95 (New pistons/rings, Cam, oil pump, ... etc.)

Engine now has approx. 1000 miles the since rebuild.  When check on
an emissions analyzer the idle mix is very rich.  Upon spark plug
examination after a good run plus appear to be on the lean side. 
Can the current stock HIF4's be adjusted to compensate or must I
change the jets & needles to correct this problem??

                                Thanks in Advance....
                                John Whitehead
                                whitej@sunynassau.edu
                                '73B

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