Checking for exhaust leak?
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Joined: Dec 2010
Posts: 70
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From: Reading, PA
Checking for exhaust leak?
How do you check for an exhaust leak? I installed the jackpot 2-1-2 headers and had a tough time with the heads. The stock headers are tapered and fit in the seal really easy, the jackpots are not.
I think i got them on good but just want to make sure. What is the best way to check?
I think i got them on good but just want to make sure. What is the best way to check?
Outstanding HDF Member
Joined: Aug 2008
Posts: 2,090
Likes: 7
Decel pop is usually the first indication of an exhaust leak. Other than that, you should be able to hear the leak, sometimes it imitates a lifter tick. Try a piece of vacuum hose, one end up to your ear, the other near the headpipe at the head
Tourer
Joined: Oct 2010
Posts: 334
Likes: 5
From: Central IN
Try covering the end of or stuffing a rag into the muffler/pipe while idling. You ought to be able to hear a hissing noise from any leaks.
The last pipes I replaced I tightened the connections, rode it to get hot, let it cool & re-tightened all the connections/clamps again.
The last pipes I replaced I tightened the connections, rode it to get hot, let it cool & re-tightened all the connections/clamps again.
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
Personally I've never checked with any of the smoke or flame methods although they sound reasonable and I would try if I felt it was necessary. Typically I'll just listen. Also when it's cold and you first start it up you can put your hand up near the suspect joints and see if you feel anything. After that just ride it a while and inspect all the joints for a soot trail. If it's leaking, you'll see it eventually.
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,488
Likes: 30
From: Maryland near DC
what I have done is to take a paper towel and roll it to look like a long cigar, nice and tight...next light one end and let it burn for a bit and then blow it out so that there are still red hots but no flame...there will be lots of smoke..now hold the smoldering part near all the suspect joints and you will see the smoke blow away if there is a leak, and if it is bad you might even see the paper burst back into flames...keep some water near by just in case it gets out of hand...
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Cruiser
Joined: Apr 2012
Posts: 217
Likes: 39
From: Cleveland
Just reviving this old thread.. Has anyone come up with any other good ways to detect exhaust leaks? I'm getting a bit of decel pop and am pretty sure I have a leak somewhere. I reused my exhaust gaskets on my header/muffler change, as well as the other clamps. My guess is I have multiple possible places for a small leak. I'm figuring I really need to just pull it all apart and reassemble with new clamps & gaskets, but it'd be nice to see where the problem is.
