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Old 03-29-2013, 06:12 PM   #1
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Default 2002 blazer coolant leaking

I have a leak coming from the engine block. It doesn't seem to be coming from any pipes. It'* a pretty massive leak.
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Old 03-29-2013, 06:16 PM   #2
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Old 03-29-2013, 08:53 PM   #3
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If you have the 4.3L, the LIM gasket will fail, typically starting at 80k miles. Have you replaced the LIM gasket? Usually it is a slow like, and sometimes a LIM gasket failure will result in coolant seeping into your oil.

A coolant pressure tester is a solid tool to pinpoint a coolant leak- but a visual of the LIM gasket and water pump are two super high failure points for coolant on the 4.3L engine.
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Old 03-30-2013, 09:27 AM   #4
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His leaked pretty close to where mine started leaking on my 2002 S10 a couple months ago.

If your doing it yourself, get this kit...

Felpro MS98002T



These are the newer upgraded gaskets that should outlast the truck itself.
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