smart51
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| posted on 22/12/06 at 05:03 PM |
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engine rev rise
If I cover the inlet to my airbox the engine's idle revs rise for a few seconds before falling off. If I take my hands away again, the revs
rise again then slowly return to normal. what's that about?
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rayward
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| posted on 22/12/06 at 05:08 PM |
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sound like your richening the mixture by restricting the airflow,
Ray
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scottc
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| posted on 22/12/06 at 05:43 PM |
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you've made your own very manual choke. 
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roadrunner
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| posted on 22/12/06 at 09:09 PM |
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Just be carefull that you don't put anything else in there.
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rusty nuts
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| posted on 22/12/06 at 10:18 PM |
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Engine may be running weak ? when you cover your air box inlet it causes the mixture to richen and engine to run better until the air is all used the
it runs too rich and stalls
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smart51
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| posted on 23/12/06 at 11:10 AM |
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Excelent advice. I just richened the mixture from 3 to 3.5 turns out and the problem has gone. The engine starts much easier from cold (2°C today)
and only needs choke for a few seconds instead of a few 10s of seconds. The engine now holds its revs when the air intake is blocked and the revs
drop slowly as the vacuum pressure on my hand increases. Thanks.
[Edited on 23-12-2006 by smart51]
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