Thread: Roush Engine Plug Reading Help.
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Old 12-03-2009, 12:00 PM
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Jim:
To check how far each Idle mixture screw is open for comparison, take a small screwdriver and gently twist each idle mixture screw closed (making note of how many turns it takes to close it) then back it out the same amount so it is back where you started, then do the other side the same way and compare.
The rings may not be fully seated yet as well, but for all plugs on one side to be completely different from the other is unusual.
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Last edited by Rick Parker; 12-03-2009 at 12:02 PM..
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