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Hey out there,I have a 2007 Pacifica 4.0litre with 88k kms on it.Well maintained.Every once and awhile
there is a sour rotten egg odor coming from the heating/cooling vents.It lasts about a minute then it's
gone and might not happen for a couple of months.I've checked for leaks around the engine and the
firewall,everything looks fine.I've checked the oil and coolent,again they look fine.
On another item here,I'm planning on replacing the sparkplugs and I understand that I'll have to remove
the intake manifold for access to the rear plugs.I was thinking of getting the manifold checked and
machined,if need be.I'll also be installing new gaskets.At the sametime I'm thinking of doing the front
rotors and pads.Should I stick to the original solid type of rotor or use the drilled and grooved type.
Do I need to turn down the rotors or can I just wash them and install them.I've heard that if you buff
the new pads in a circular motion with 200 grit sandpaper that it will prevent the pads from glazing.
But I've also heard that if I don't turn down the new rotors that glazing and squeaking will occur.So
I quess if I don't have to machine the new rotors than I'll be fine doing them myself,if not then off to
the breakshop we go.
I appreciate any suggestions and happy motoring
MJ
 
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