Re: [AMC-List] Weird non-running issue on '82 Jeep CJ

["Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>]

Nick, I have a J-10 pickup with some of the same problems. Only mine has
the BBD (appears to be an earlier type without stepper motor -- has been
changed and other smog stuff pulled off -- it's an 83 from NY City) and
a much more obvious vacuum leak. I drove it from NYC to Dover, DE, with
no problems, then on down to SC (where I left it). The vacuum leak got
worse as I drove it a bit in SC. Appears to be an intake manifold leak
-- the exhaust manifold is obviously leaking. This is common on these
things! While you have the manifolds off check for flatness where they
mate to the block, and have trued at a machine shop if necessary. Then
just check the manifold bolts for tightness occasionally. The constant
expansion and contraction of the exhaust manifold works the bolts a
little loose, that's the disadvantage of using the same bolts for both
manifolds. Since the exhaust manifold on mine is pretty rusted where the
studs hold the head pipe on, it's going to have to be replaced. I think
I have a Renix (87-90) 4.0L tubular manifold in storage, will replace it
with that when I move early this summer. Might look for a good deal on a
4V intake and Holley 390 carb while I'm waiting too... ;> 


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