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Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 27 (permalink) Old 02-03-2010, 08:14 PM Thread Starter
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Exhaust Leak

Are the 06 Xks prone to leaks at the manifold or header? This morning I got out of the XK right after starting it only to hear a strange noise which I first though was a stuck lifter or valve but sounded, after a shot time, like an exhaust leak. It seems to go away after things warm up.

I hope I can see your responses as I seem to having a problem opening any thread on this site and only this site. I sent a message to the moderators last week but have not had a response so not sure they received it. The site shows I am signed in but cycles thorugh and then I get a message that there is a problem with the wed page and it takes me back to the forum menu or new post menu, depends which one I tried to open the thread from.
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post #2 of 27 (permalink) Old 02-03-2010, 08:18 PM
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No idea on the exhaust leak.

I had to switch to Mozilla Firefox to get rid of the loading errors I was getting with IE7 and this site.

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post #3 of 27 (permalink) Old 02-03-2010, 08:20 PM
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Quote:
Originally Posted by Creek View Post
Are the 06 Xks prone to leaks at the manifold or header? This morning I got out of the XK right after starting it only to hear a strange noise which I first though was a stuck lifter or valve but sounded, after a shot time, like an exhaust leak. It seems to go away after things warm up.

I hope I can see your responses as I seem to having a problem opening any thread on this site and only this site. I sent a message to the moderators last week but have not had a response so not sure they received it. The site shows I am signed in but cycles thorugh and then I get a message that there is a problem with the wed page and it takes me back to the forum menu or new post menu, depends which one I tried to open the thread from.
Well your thread posting worked this time. Sorry can't help you on the exhaust leak issue.

2007 XK Limited, 5.7L Hemi, QDII, Rusty's 2" lift, Spidertrax 1.5 inch wheel spacers, GetLost4x4's front hitch mount for portable winch.GY Duratracs 265/70R17s , Rola Roof Rack, diy built spare tire mount for the roof rack.
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post #4 of 27 (permalink) Old 02-03-2010, 08:22 PM
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Hi Creek,
Several members have had manifold gaskets fail, some had manifold bolts loosen or snap off (leading to gasket failure), and I think one had a cracked manifold...long ago.
So, I guess the answer is yes, there have been a few failures.

Your description,' quiets down as it warms up' lines up with loose bolts.
As the manifold expands it reseals to the head.
Usually, if a bolt is broken off the leak remains constant.

Good luck,
Rob


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post #5 of 27 (permalink) Old 02-03-2010, 09:00 PM Thread Starter
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Quote:
Originally Posted by robby View Post
Hi Creek,
Several members have had manifold gaskets fail, some had manifold bolts loosen or snap off (leading to gasket failure), and I think one had a cracked manifold...long ago.
So, I guess the answer is yes, there have been a few failures.

Your description,' quiets down as it warms up' lines up with loose bolts.
As the manifold expands it reseals to the head.
Usually, if a bolt is broken off the leak remains constant.

Good luck,
Rob
Robby,
Can I reach these bolts wihtout a lift? Remenber I am in FL so laying on the ground is not a problem, except for old age. Is there a troque spec and tightening patterning? I can always count on and appreciate your response. Thanks.
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post #6 of 27 (permalink) Old 02-03-2010, 09:21 PM
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Quote:
Originally Posted by Creek View Post
Robby,
Can I reach these bolts wihtout a lift? Remenber I am in FL so laying on the ground is not a problem, except for old age. Is there a troque spec and tightening patterning? I can always count on and appreciate your response. Thanks.
LOL...X2 on the old age thing.
It appears you can access the bolts by removing the inner fender liners (and wheel)
I thought there were some photos posted, you may want to search around a bit unless 5253 (searchmaster) beats you to it.

No real pattern on manifolds beyond starting at center and working towards the ends.
Although I'm sure there is a torque spec. and some will disagree with me but, I kinda use a tight is tight dead reconning method.
But, if you see any missing bolt heads, the maniflod will have to be removed for extraction.
Might want to get in there with a dental or inspection mirror before you disassemble too much.
Frankly, any loose ones I would replace since they probably got loose due to stretching, and they likely are on the verge of breaking while retightening.

Hope that helped a bit,
Rob


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post #7 of 27 (permalink) Old 02-03-2010, 09:32 PM Thread Starter
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I am with you tight is tight. I hope to have some time on Friday to check things out, if not I will have to wait until next week. Can the studs be removed without removing the entire manifold.
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post #8 of 27 (permalink) Old 02-03-2010, 09:38 PM
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I don't know how many studs are used (if any) but if so, they often can be removed by double nutting and using a socket over both nuts,to unscrew it.
Just don't have too many fasteners removed at once, for obvious reasons.
Don't want that gasket to slip.
The hope here is the gasket hasn't burned through.

Rob


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post #9 of 27 (permalink) Old 03-07-2010, 07:43 PM
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not sure but it might be.
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post #10 of 27 (permalink) Old 03-07-2010, 08:02 PM
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Quote:
Originally Posted by Fritz View Post
not sure but it might be.
In reading one of Creeks later posts, trying to locate a fuse, I believe the drivers side was the leaker.
He did not report back if it was loose, or a bolt, or a gasket.
Since nothing was mentioned I have to believe he was successful though.

Rob


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