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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,525
Garage
I don't see your location listed.
You shouldn't have any problems when it gets cold but it never hurts to check. Mine has a range of about 1% between cold dry weather and hot humid weather.
There is a relationship between the idle mixture and the cold and warm fuel pressure as well. I found that when my cold pressure was nearly out of spec my mixture would have less adjustability on the rich side once the engine is up to operating temps. On hot days the idle would oscillate so I tweaked the mixture just enough to calm the idle. All that went away when I re-adjusted my cold pressure. The A/F range between cold dry and hot humid stayed at 1% but the threshold for oscillation was no longer within that same range.
How much of that is due to old worn parts? I have no idea.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 07-26-2007, 09:23 AM
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