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Beer and Cheese
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7,386 Posts
Discussion Starter #1 (Edited)
Cigar vacuum leak test

For those of you that have lean codes or are troubleshooting an idle problem do a vacuum test first before you replace sensors or hoses. You can try the propane or carb cleaner trick to find a jump in idle. But here is a way you can pinpoint a vacuum leak with cigar smoke. This may not work for everyone, depending your set up. This method is a lot cheaper than building your own smoke machine or having to pay an auto repair shop to do a vacuum smoke test. Hope this helps.

First buy some strong nitrile gloves; these are some of the gloves used by law enforcement and EMT's for extra strength. Wrap the glove around your throttle body opening. You can use a rubber band to keep a tight seal, but I used a bungee cord to make sure it wouldn’t budge.



Next buy a cheap cigar.



Find a vacuum line that is located after the throttle body.



Light your cigar, take a puff of smoke and blow it into your vacuum line. You should see your nitrile glove blow up at the throttle body. Make sure you check your glove for leaks at the throttle body and the glove itself. By doing this you are creating positive pressure in the intake manifold. Where ever there is a leak in your system that is where the smoke will seep out.

Look for smoke.



Now that you found your leak, replace the appropriate parts or hoses and enjoy your cigar.

Thank you,
 

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Super Moderator
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12,024 Posts
Oh, you're just blowin' smoke ...

:tongue:
 

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Registered
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1,181 Posts
I love these simple methods of trouble shooting, like using a yard stick as a stethascope to locate an engine noise.. Good job Josh oh and congrats on the new addition.:thumbsup:
 

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WOT Junkie and avid corn burner
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3,734 Posts
That's about all those Black and Milds are good for. lol
 

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Beer and Cheese
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7,386 Posts
Discussion Starter #7 (Edited)
Yes it was Swisher Sweets, lol. I saw this trick on YouTube so I had to try it. I've never seen anyone on here talk about it so I had to snap a couple cell pics. There are guys on YouTube who are throwing together tons of money-worth of supplies to make DIY smoke machines. :zdunno: This worked just as good. Thanks guys!
 

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Super Moderator
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LOL

That's what I was thinking - Swisher Sweet ...

For cheap cigars they're not bad at all.
 

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Beer and Cheese
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7,386 Posts
Discussion Starter #9
I'll have a cigar every once and a while, Swisher Sweets are ok...now its the Cuban cigars you really want to use for the leak test. :D
 

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̇
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3,701 Posts
This reminds me of a trick I use to check exhaust leaks on the cheap..

Leaf Blower+ Smoke Bombs+ Duct Tape= Homemade Exhaust Leak Detector.. :gapteeth:



Rayo..
 
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