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#1
08-28-2018, 07:56 PM
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98 lumina,coolant leak on floor.=
coolant on driveway floor.==
small coolant leak. passenger side nearest to fire wall area. no coolant trail seen. a few drops on the bottom corner of engine block. mechanic says maybe it,s coming thru the timing chain cover. will tighten the bolts. thanks for any advice. 
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#2
08-28-2018, 10:25 PM
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Re: 98 lumina,coolant leak on floor.=
If a coolant pressure test doesn't show the source, than add coolant dye and use a black light...
I am guessing a 3.4, and lower intakes are famous for leaking...
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#3
08-28-2018, 10:27 PM
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Re: 98 lumina,coolant leak on floor.=
It's possible that the TC cover is leaking. It's more probable that the corner of the intake or water pump would be a source.
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#4
08-30-2018, 01:56 PM
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Re: 98 lumina,coolant leak on floor.=
my back yard mechanic replaced the water pump about 10 days(?) ago.. it had a residue around the seep hole so we figured that was it.
the manifold gasket was replaced years ago with a metal felpro. car has about 280,000 miles on it now. curious thing= I,ve been having vacuum problems for a while. wonder if there,s a connection to this coolant leak somehow?
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