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Code 172 question.

 
  #1  
Old 08-20-2009, 11:28 AM
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Code 172 question.

Could a leaking exhaust (passenger side, btw) cause a #172 lean right side code?

Also could this be the cause of a intermittent "stumble" or shudder while driving and a slow-to-accellerate from a stop condition? If it was a carb, I'd say it was bogging down and needs to be revved to clear it up.
 
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Old 08-20-2009, 02:17 PM
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Originally Posted by broncoderek View Post
Could a leaking exhaust (passenger side, btw) cause a #172 lean right side code?
It sure could. Fix it and see if you still get the stumbling.
 
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Old 08-20-2009, 02:23 PM
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I tried to edit my first post, it was an exhuast MANIFOLD that leaks.

Anyone ever PAID to have this done? I'm short on time and no spare vehicle. Wondering what the cost is or could be (yikes, snapping bolts?).
 
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Old 08-20-2009, 02:42 PM
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Is it leaking at the flange or is it cracked? I know about how much a new one runs, but no idea how much it is to repair one. Can't be much, especially if you remove the manifold yourself and take it to them.
 
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Old 08-20-2009, 04:49 PM
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Time for Long tube headers .... Lew
 
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Old 08-20-2009, 05:50 PM
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I believe it's at the block or cracked somewhere. I need to get under it to look closer. It's so freaking hot that I can't lay underneath it in the driveway!

I was hoping to find a crack that I can weld.

Isn't a crack more common than the block/flange mating problem with stock manifolds?
 
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Old 08-21-2009, 12:22 AM
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Manifolds connect to the heads, fyi. I've personally never heard of a cracked manifold, but if it's not totally rusted, you can weld or you can get some muffler tape and tape it up. Good for diagnostics, but nowhere near as permanent a fix as headers or welding the hole. Oh, a crack would be more likely than a mating problem unless you had them off before
 
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Old 08-21-2009, 06:54 AM
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Originally Posted by Neptoess View Post
Manifolds connect to the heads, fyi.
I can't even believe that I wrote that part about the block instead of the head(s).

Thanks for the correction... but PLEASE believe me that I knew that already and just screwed up.

Sure, I've only done serious exhaust work and removed the head(s) on 4cyl Suzuki motors but...
 
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Old 08-21-2009, 11:19 AM
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Originally Posted by broncoderek View Post
It's so freaking hot {or cold} that I can't lay underneath it in the driveway!
Big sheets of cardboard from Costco? ;)
Pattern a shotgun on them, twice, each too. ;)
Also they make good wiring diagram or map folders.

SWMBO will love this one...
Use them to cover the carpet when you bring
automotive stuff in the house to work on it.
LOL :)

It's friggin hot out there, weld that manifold up
in the house for cryin out loud. :/

Alvin in AZ
 
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Old 08-21-2009, 11:52 AM
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Originally Posted by Alvin in AZ View Post
LOL

It's friggin hot out there, weld that manifold up
in the house for cryin out loud. :/

Alvin in AZ
I have to get the thing OFF before I bring it in the house! But I can't take the time because I have no spare vehicle should something go wrong and I run my own business and never have a block of hours where I can get down to work on it.

I DO have lots of excuses though!
 
 
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