2000 Mazda MPV cracked block

Tiny
JABOSKI321
  • MEMBER
  • 2000 MAZDA MPV
  • V6
  • FWD
  • AUTOMATIC
  • 140,000 MILES
With the engine off, I poured water down the hose connected to the water pump. In 3 seconds water came out the drain on my oil pan. I drained the oil before I did this and left the drain plug out. I really want to know if it could still be a head by doing this, or the block.
Friday, January 10th, 2014 AT 1:24 PM

4 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 34,330 POSTS
That would have to be a cracked block. Water doesn't run uphill to the head gasket. Even if the water was leaking through a head gasket or crack in the head, it would sneak through it very slowly.
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Friday, January 10th, 2014 AT 2:13 PM
Tiny
JABOSKI321
  • MEMBER
  • 5 POSTS
How could I find the crack, or could I even fix it?
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Friday, January 10th, 2014 AT 2:21 PM
Tiny
CARADIODOC
  • MECHANIC
  • 34,330 POSTS
Sorry to keep you waiting.

You don't fix a cracked block. You replace it. Upon lots of diagnosis, if the crack is found to be in a cylinder wall, that cylinder can be bored over-size, then a liner is installed, but that is expensive and would only be done to a rare and / or valuable engine like Chrysler's 426 Hemi. For normal engines it is most economical to find a good used engine at a salvage yard.
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Friday, January 10th, 2014 AT 11:22 PM
Tiny
JABOSKI321
  • MEMBER
  • 5 POSTS
I guess it's not good news either way. Thank you for your time, think ill just scrape that one and buy another during tax time. Thanks again and have a good day.
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Saturday, January 11th, 2014 AT 4:27 AM

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