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RarlyL8 RarlyL8 is offline
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,551
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The temperature adjustment function is done mechanically with a bi-metal strip referencing ambient temps. Once the cold engine is started an electrical current heats the strip which moves against the diaphragm increasing the fuel pressure as it warms. Once warm the engine heat then keeps the strip maxed out.
You check the cold pressure readings against the chart of ambient temp vs pressure range and adjust to the middle of the range using that one data point reference. Once set the pressure should reamin in spec throughout the cold range. If not the bi-metal strip may be worn out, damaged, or out of alignment.
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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 03-11-2008, 02:51 PM
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