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2.2 with Zeniths, high idle(2000) for 30-40sec before it settles?
A friend has a 1970 2.2 with zenith carbs, all standard. When driven and warm the idle wont settle down to 900 rpm like it should. It settles down to 900rpm after 30-40seconds at +/- 2000 rpm. Have tried with "start gas spray" for false air suction, but no change in RPM. Timing seems ok. Any obvious culprits? Maybe in the carbs themselves? The owner is afraid that it get to much air/to lean when this happens.
John
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997 C2S 2005 "Slate grey"(special order 1965color) 911 SC 1978 Silver/black 34.000 miles from new! 911 2.2 S 1971 Albert Blue/Black and 911 2.2 T 1971 Tangerine/Blood Orange/Black Sold: 911 2.4 S 1973 Viper Green/Kelly Green; 993 C4S 1996 Black/black; 993 C4 1994 Black/Black; 996 C4 2000 Black/Black; 996 Turbo 2003 Silver/Black Last edited by zithlord; 09-11-2011 at 11:17 AM.. |
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09-11-2011, 10:23 AM
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Registered
Join Date: Mar 2007
Location: Rockville, MD
Posts: 793
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Sticking or weak springs in distrubutor?
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09-12-2011, 12:15 PM
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Registered
Join Date: Mar 2004
Location: Windsor, CT
Posts: 2,119
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There is a auxilliary circut that prevents a fast deceleration for emmisions reasons. I don't know how long it is active. 30 seconds sounds too long. The solenoid on the right carb may be sticking open.
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09-12-2011, 02:48 PM
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1973 Porsche 911S 2.4S
