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Unread 06-20-2013, 03:07 PM   #1
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,088
Harsh tick at start up and slight warm idle stumble

The Tick I figured was just a dry lifter or two, and I guessed it was time to play with Mr. BBD this spring. Was going to look at the carb this weekend.

Was checking the air filter today and reached down to check the manifold bolts. If the washer will spin it is loose, easy to check.

Well, not only were 4 of the bolts loose, I could back them out with my fingers.

I can't remembr how many times I have warned others about these 6cyl Jeep engines working the manifold bolts loose, but I haven't been checking mine.

All is tight now, no cracked manifolds, and the noise at startup is gone. Mr. BBD has it purring like a kitten again.

I have now added "check manifold bolts" to my list todo list during oil changes.


edit to add: These loose bolts will cause both exhaust leaks and vacuum leaks.

__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
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Unread 06-20-2013, 04:01 PM   #2
kenh
Registered User
1989 YJ Wrangler 
 
Join Date: Sep 2011
Location: Billings, MT
Posts: 97
Good to know thanks. I found this page which shows the sequence and torque for each bolt.
http://www.autozone.com/autozone/rep...00c1528008a995
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