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Guest Message by DevFuse

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massive air leak

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5 replies to this topic

#1 Markus56


    Whup tee do

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Posted 26 August 2009 - 09:08 PM

Weber swap on an '85 GL wagon. It runs really lean and i cant figure out where the air leak is happening. I have all the vacuum ports sealed off and I am going to get a can of brake cleaner to try and find the culprit.

is there any other things I am missing?

#2 monstaru


    wow, relevance....

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  • OlyWa

Posted 26 August 2009 - 10:00 PM

you have to touch your right nipple to the left ventricle on the carb,and it will work.......:lol:sorry, couldna resist.
make sure your mounting surfaces are not the culprit as well.old vacuum hose gets hard sometimes, and it will not seal.the cool thing is this stuff is usually cheap.so replace if you have any doubts.

it can be a huge pain in the rump roast to figure this out. just have patience...it will work out mang...cheers, brian

#3 Markus56


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Posted 26 August 2009 - 10:08 PM

I already did the ventricle thing and danced the weber dance. nothing. :D

there aren't any vacuum lines left. the beauty of the weber

Edited by Markus56, 26 August 2009 - 10:12 PM.

#4 nolicense


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Posted 26 August 2009 - 10:35 PM

have you put a vacuum gauge in there, too see if it is exactly a vacuum leak? theres been a few times working on cars where people say its a vacuum leak and then I hook up my vacuum gauge and its got a steady needle.

#5 Markus56


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Posted 26 August 2009 - 10:55 PM

no, but i blocked off the most of intake with my hand and it ran fine then. And it is running really lean. So I am assuming that there is too much air, hence a vacuum leak. And it is idling at around 2000-3500 rpm, so it is bypassing the idle circuit, so changing the fuel/air mixture won't do anything.

#6 4x4_Welder


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Posted 26 August 2009 - 11:58 PM

Brake booster, PCV are the first things that pop to mind. Also, if you ditched the EGR, make sure to use a block-off plate, don't just leave the valve in place disconnected.

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