Question about 1997 GMC Safari

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I have had this repaired 4 times and seems to blow out the gasket between the pump and block the pump was replaced about a year ago the shop has glued the gaskets to the pump but still blows out

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  • Anonymous Mar 27, 2014

    Could it be a oil pump problem ?
    A pump's relieve valve ?

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  • GMC Master
  • 6,982 Answers

That should not happen...providing that you don't have a pressure problem from a blown head gasket, try roughing up the surfaces of the block and pump with 60 or 80 grit sandpaper to permit the gasket to "bite" into them better. Don't over-do this and don't create marks that go from the passages to the outside. Don't use silicone glue as in your situation it may be too slippery. Though it is more difficult to remove later, use a glue similar to the old "indian" glue.
Start the engine without water in it and permit it to run without coolant for two or three minutes to heat the glue and allow it to harden,(just enough to heat engine...too long can damage heads and other gaskets) then add coolant in a half hour or so after you have finished. Also, check that bolts are not too long and are bottoming out before getting tight.(though on most gm engines the holes go all the way through into the water jackets.)

Posted on Sep 10, 2009

Testimonial: "well thats what they did the third time so they tell me its going back for for the last time and i seem to think it may a bad surface on the water pum"

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