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POOR GAS MILEAGE 760 Turbo 700

posted by  Prickles on  Sun Dec 15 17:42 CST 2002
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last visit: Sat Jan 31 09:13 CST 2009
[RELATED]

Hi all, could anyone possible help? My 90 760 turbo gets horrendous gas mileage, about 15 to 16 miles to the gallon even when I try to not step on it. Plugs, cap and rotor are all new. I have replaced the O2 sensor and have done a throttle body service to it. I work for a fuel additives manufacturer, so I have access to injector cleaning equipment and chemicals. Which has still not remedied my problem. I am also getting no codes from the OBD system. Could anyone give me any suggestions? The engine does "shake" a small amount at idle and runs slightly rough. Compression is good and even on all cylinders. Other than that, can't find anything obvious (vacuum leaks, etc.). Thanks in advance for any assistance.

Mike





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