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checking vacuum

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Old Jan 12, 2004 | 02:38 PM
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Default checking vacuum

As related to my post in the Civic forum,

how do i check the vacuum system? I have read that it can be a cause of a lean running condition.

thanks for the help!

heres a link to my other thread, if you wanna help me there :thumbup:

https://www.honda-acura.net/forums/s...hreadid=118724
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Old Jan 13, 2004 | 06:50 AM
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The vacuum system? Just buy a can of carb cleaner, have the engine held around 2500 RPM, and spray the hoses, intake manifold gasket and throttle body gasket a little at a time, listening for a change in RPM [~500 RPM]either up or down very suddenly.
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Old Jan 13, 2004 | 10:48 AM
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sounds messy
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Old Jan 13, 2004 | 11:31 AM
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The carb cleaner evaporates pretty quickly. You'll actually be cleaning the lines as you spray them also
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Old Jan 13, 2004 | 11:37 AM
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carb cleaner is extremely corrosive, iirc. will there be any damage to the hoes?
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Old Jan 13, 2004 | 11:45 AM
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Originally posted by brtecson
carb cleaner is extremely corrosive, iirc. will there be any damage to the hoes?
The spray not the dip kind of carb cleaner.

The spray [aerosol can] is rubber and plastic safe, made to clean carbs still mounted on the engine. The dip will turn rubber into a mushy pile of tar.
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Old Jan 13, 2004 | 12:07 PM
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cool, thanks a lot man. I'll give it a try. How do i know which lines to spray?
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Old Jan 13, 2004 | 01:07 PM
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Spray all of them, you're trying to find leaks, if you don't know which are leaking, then you don't know which to spray, do you?
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Old Jan 13, 2004 | 01:09 PM
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be careful though....i used to work at uhaul and ive seen 3 trucks go up in flames. but they use kinda a slow evap cleaner.
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Old Jan 13, 2004 | 01:11 PM
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Originally posted by vTeggy86
be careful though....i used to work at uhaul and ive seen 3 trucks go up in flames. but they use kinda a slow evap cleaner.
Originally posted by 1stGenCRXer
spray the hoses, intake manifold gasket and throttle body gasket a little at a time,
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