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another stupid cis ?
77 2.7 cis Idles great with the vaccum advance unhooked, the idles like crap with it hooked up. Any Ideas?
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2005 911 carrera 57 BMW r50, 2007 Ducati s2r 1000 2007 Boxster (sold) 77 2.7 911s chocolate w/ducktail (Mr Hankey) (sold) 77 930 black (sold) |
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05-01-2005, 05:16 PM
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this is a weird one.....
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2005 911 carrera 57 BMW r50, 2007 Ducati s2r 1000 2007 Boxster (sold) 77 2.7 911s chocolate w/ducktail (Mr Hankey) (sold) 77 930 black (sold) |
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05-01-2005, 06:00 PM
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Join Date: Oct 2003
Location: London Ont Canada
Posts: 3,120
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Check the timing with a strobe light. The advance may be closer to correct without the advance hooked up because the base timing is wrong
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1980 911 SC 3.6 coupe sold 1995 993 coupe 1966 Mustang Shelby clone 1964 Corvair Spyder Turbo gone 2012 Boss 302 |
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05-01-2005, 06:33 PM
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I timed it with the vaccum advanced pluged, and 3mm to the right of the z1 mark. Is this the correct timing?
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2005 911 carrera 57 BMW r50, 2007 Ducati s2r 1000 2007 Boxster (sold) 77 2.7 911s chocolate w/ducktail (Mr Hankey) (sold) 77 930 black (sold) |
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05-01-2005, 06:37 PM
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Join Date: Dec 2004
Location: Novato, CA
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If your car has the advance biscuit with the double hookups (one retard & one advance), then you need to have both disconnected and plugged prior to setting the time. The retard side retards the timing significantly at idle (10 deg or so?), but loses vacuum immediately when you open the throttle. So:
Get car warmed up, disconnect both hoses and plug them, set idle to 900 RPM, set timing to the correct spec (not sure what yours is, but someone here or your manual should be able to help). Double check after tightening dist clamp bolt. Then, connect both hoses again and reset idle to 900. Hope this helps, ianc
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BMW 135i. Nice. Fast. But no 911... "I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79 |
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05-01-2005, 08:03 PM
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