Finding vacuum leaks

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altfrwevpm http://www.livejournal.com/interests.bml?int=altfrwevpm
There are several methods for locating vacuum leaks. Occasionally, you may experience a vacuum leak into the intake ports from the crankcase of the motor due to the intake manifold / cylinder head interface not being machined parallel. No amount of propane or carburetor cleaner will find such a leak. The best way is to insure the elimination of such a problem while building the motor. See the wiki article: [[Manifold/Head vacuum leak, internal]].
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<a href="http://www.livejournal.com/interests.bml?int=altfrwevpm">altfrwevpm</a>
 
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[url=http://www.livejournal.com/interests.bml?int=altfrwevpm]altfrwevpm[/url]
=Propane method=
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[link=http://www.livejournal.com/interests.bml?int=altfrwevpm]altfrwevpm[/link]
 
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lieltvirer http://pzedplalego.livejournal.com/1478.html
#Get a soldering propane tank and valve attachment.
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<a href="http://pzedplalego.livejournal.com/1478.html">lieltvirer</a>
#Unscrew the end of it so you have a threaded pipe without the nozzle.
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[url=http://pzedplalego.livejournal.com/1478.html]lieltvirer[/url]
#Attach a 2 foot piece of hose to the end.
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[link=http://pzedplalego.livejournal.com/1478.html]lieltvirer[/link]
#Start the engine and let it warm up a bit.
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quakozlo http://bosneaqetpol.livejournal.com/866.html
#Turn on the propane and run the hose all around the vacuum lines and the bottom of the carb.
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<a href="http://bosneaqetpol.livejournal.com/866.html">quakozlo</a>
#If the engine smooths out or revs up a bit, you have found your leak.
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[url=http://bosneaqetpol.livejournal.com/866.html]quakozlo[/url]
 
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[link=http://bosneaqetpol.livejournal.com/866.html]quakozlo[/link]
Hold bottle UPRIGHT during testing as liquid propane may run out of an inverted bottle.
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hmalaeltva http://fokfinoilip.livejournal.com/745.html
 
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<a href="http://fokfinoilip.livejournal.com/745.html">hmalaeltva</a>
PLEASE do this in a well ventilated area due to propane gas and exhaust fumes!!
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[url=http://fokfinoilip.livejournal.com/745.html]hmalaeltva[/url]
 
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[link=http://fokfinoilip.livejournal.com/745.html]hmalaeltva[/link]
=Carburetor cleaner method=
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coxnoacelv http://araaaltpmfaso.livejournal.com/1210.html
#With the car running, using a can of carburetor cleaner spray down the hoses and vacuum connections.
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<a href="http://araaaltpmfaso.livejournal.com/1210.html">coxnoacelv</a>
#Notice a change in the running of the engine and you might have found your leak.
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[url=http://araaaltpmfaso.livejournal.com/1210.html]coxnoacelv[/url]
 
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[link=http://araaaltpmfaso.livejournal.com/1210.html]coxnoacelv[/link]
[[Category:Engine]]
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Revision as of 15:03, 22 April 2009

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