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Old 07-01-2003, 12:05 PM
Maxwell's Avatar
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Join Date: Feb 2003
Location: Los Angeles, CA
Posts: 123
Wow, all that clanking wasn't normal!!!

I was checking my air filter when i noticed my intake manifold was a bit loose! I'm not sure how this was possible with the exhaust manifold being tight, when they share the same bolts and gasket. I tightened the bolts just a bit with a small driver, no more rattling manifold, my car is soooo much quiter, and fewer things in the cabin vibrate.

My question is this, Is the exhaust manifold overtightened now?, If I got a new gasket, torqued the manifold bolts properly, and the intake was still loose, what then?

83 240D four bagger stick diesel 276K
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Old 07-01-2003, 06:58 PM
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Join Date: Jan 2000
Location: PA
Posts: 5,440
If bothe manifolds are OK now, leave them alone. You fixed the problem so now it ain't broke so don't try to fix it.

You might check it periodically to make sure it doesn't get loose again.

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Old 07-02-2003, 12:08 AM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,277
If you did that it would mean you had not cleaned up the holes and lightly lubed your threads.. that caused you to reach your torque figures without getting the pulldown effect you should from the interpolation the engineers have figured into that relationship.
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Old 07-02-2003, 01:19 AM
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I've got the exact same deal-clanking I hear in tight squeezes and parking garages. Good to know the problem is easy to fix-I'm on it this week.
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Old 07-02-2003, 03:38 AM
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Certified diesel nut
Join Date: Mar 2002
Location: Pacifica (SF Bay Area), CA
Posts: 2,946
Wait, so the clanging around was caused by the intake being loose and not by the air cleaner mounts being loose/broken?

I've got a lot of clanging, but both of my remaining air cleaner mounts are loose (thread stripped in part, so it's impossible to tighten them)...I want to go to some variation of DieselHead's air intake setup, but I'm trying to figure out how to make the open-element air cleaner work with some form of ram-air...

2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999
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