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Yes (was: Re: Something else...)
Posted by jlw (more from jlw) on Thu, 1 Feb 2001 12:44:30
In Reply to: Something else..., Gary Piland, Thu, 1 Feb 2001 00:10:57
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If you've got a vacuum leak, the car will run lean (extra air is sneaking in without gas to match) and this will cause "lean surge." At highway speeds and/or nearly full throttle, so much air is coming in through the carb that the extra provided by the leak is only a small percentage of the total and doesn't make much difference. At small throttle openings, though, the leak contributes a significant proportion of the air -- enough to throw the fuel mixture off to the point that drivability deteriorates.
So, I'd check the sealing of the base of the carb again -- and if your car has the intermediate plate between carb and manifold that provides the vacuum connection to the power-brake booster and PCV valve, don't forget to check that too. Also, don't overlook the vacuum hose to the distributor as another possible source of leaks.
Posts in this Thread:
- Weber (and other) Carb experts chime in..., Gary Piland, Tue, 30 Jan 2001 22:30:28
- Re: Weber (and other) Carb experts chime in..., kansas, Wed, 31 Jan 2001 19:55:20
- BE CAREFUL WITH THAT!!!!!!!, Dave Westlake, Wed, 31 Jan 2001 23:03:19
- Re: BE CAREFUL WITH THAT!!!!!!!, kansas, Wed, 31 Jan 2001 23:44:46
- More info, Gary Piland, Thu, 1 Feb 2001 00:06:20
- Re: More info, kansas, Thu, 1 Feb 2001 13:25:09
- Something else..., Gary Piland, Thu, 1 Feb 2001 00:10:57
- Re: Something else..., ERNESTO
, Tue, 13 Feb 2001 13:33:54 - Re: Something else..., ERNESTO , Tue, 13 Feb 2001 14:30:30
- Re: Something else..., kansas, Thu, 1 Feb 2001 13:28:43
- Yes (was: Re: Something else...), jlw, Thu, 1 Feb 2001 12:44:30 <-- Viewing This Message
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