[DMCForum] Re: Checking vacuum leak at mode switch
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[DMCForum] Re: Checking vacuum leak at mode switch



Sorry, as a closet historian, I'm keeping things mostly stock. I'm 
not opposed to some 'Zillas though. :)

--- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> Easiest check would be to simply cap off nipple on passenger intake
> rail (3/8"). Remember this nipple also powers brake booster before
> driving car. Of course if engine is sucking air elsewhere this test
> may not tell much.
> 
> Also don't forget there's a hard plastic vacuum line from mode 
switch
> back to heater core shut off valve that could crack and leak.
> 
> Engine will idle just fine with no external vacuum devices. You 
could
> simply cap all nipples, then concentrate finding leaks on block
> itself. After engine is tight diagnosing things like mode switch 
will
> be easier.
> 
> How's a 302 looking right about now?
> 
> Bill Robertson
> #5939
> 
> >--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> > I finally took my wheels to a tire shop and had them mount my new
> > tires. (BFG Radial T/A's.) White letters out. The car looks nicer 
now.
> > The old rubber wasn't fit for the test drives around my parking 
lot.
> > 
> > That one wheel that I finally freed the lug nut on really did 
stick to
> > the hub. A squirt of "Deep Creep" and a few taps of a hammer 
broke it
> > free. The tire shop had a helluva time getting my rotted valve 
stems
> out.
> > 
> > The good news is, the wheel that I freed is the one at the angle 
drive
> > so I intend to check that out tomorrow. I still have one final 
wheel
> > to break free. Ugh.
> > 
> > Back on the subject of my vacuum leaks, how does one check for 
them at
> > the A/C mode switch? By ear, or do you squirt stuff in there or 
what?
> > 
> > The rough idle and sneezing is bugging the crap out of me.
> > 
> > 
> > 
> > 
> > 
> > --- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> > > Would be surprised if angle drive makes enough noise to be heard
> > > inside passenger compartment. More likely culprit would be 
brake pads
> > > missing anti-rattle clips. Wheel bearings themselves could also 
have
> > > problems.
> > > 
> > > Angle drive is nothing more than right angle gears (ring & 
worm, not
> > > 45 degree style, but principle is same). Spin either direction.
> > > Speedometer itself prevents movement in reverse.
> > > 
> > > Everyone in another Group thinks I'm crazy, but my spindle 
cable was
> > > wound counter clockwise. Forward motion ultimately killed it 
(actually
> > > was one other post that agreed with me). Wouldn't hurt any 
owner to
> > > pop wheel disc off and see how cable is wound. If it's 
backwards, be
> > > prepared for same.
> > > 
> > > Bill Robertson
> > > #5939
> > > 
> > > >--- In DMCForum@xxxxxxxxxxxxxxx, "erikgeerdink" 
<erikgeerdink@xxxx>
> > > wrote:
> > > > I noticed yesterday while pulling out of the garage that 
there is a 
> > > > clicking noise coming from the front drivers wheel area.  I 
don't 
> > > > hear it going forward at all at any speed.  Seems like it 
> > > > corresponse to wheel rotation.  Any ideas?
> > > > 
> > > > Erik



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