Question about 1999 Chevrolet Tahoe

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Water Leak I am filling a galllon of water every 2 days. no water on ground and no water in passenger side carpet. how can i tell where the leak is coming from?

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  • 10 Answers

You have two options to start with, either pressure test the cooling system to check if you have a leak under pressure or you will need to check your water in the radiator for combustion gases. Quite a simple check with the right equipment. the air from the header tank gets absorbed into the liquid that changes colour if combustion deposits are present.
If no leaks are visible the water is probably getting burnt in the engine, ie head gasket.
Have you checked the oil for emulsification, basically it goes white mix oil with water under these circumstances the cam/ rocker cover is full of a white sludge.
Also bear in mind if you have wet liners for the pistons the seals can go allowing oil to enter the sump[.

Posted on Jan 16, 2013

Testimonial: "steve i think u were right on, did the pressure test and thought it ws leaking from water pump. now i have drained the oil pan and have a milky brown substance. i am assuming this is not good but can yu give me an educated guess on what yu think this might be. Really appreciate your help."

  • Chuck Kelly Jan 21, 2013

    Thanks for the help. Seems like water is leaking from front and back of oil pan. aslo drained the oil and it is a brown milky substance. What do u think the problem is?

  • steven noonan
    steven noonan Jan 29, 2013

    Hi Chuck My money would be on the head gasket, possible damage to the head surface that may require skimming to get a flat surface.The head will have to come off, so you can check the gasket. You need to confirm the gasket is blown. Then check the head for level. I am not aware of your capabilities mechanically speaking so unable to advise if you could take this on. Worse case scenario is if you strip it out and are unable to reassemble someone is going to charge more to put it back than do the job from the start. I would give you hand but you would have to pay the plane fare.Steve

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Posted on Jan 02, 2017

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  • 25 Answers

SOURCE: coolant leak

Could you post what size engine you have in your car?

Posted on Aug 12, 2008

  • 20 Answers

SOURCE: leaking water from front passenger side, under dashboard

It is either condensation water from the A/C unit that should go out a drain tube to the outside (only if A/C or Defrost is on) or a leaky heater core. If it is a heater core you can usually smell a coolant smell and the water will be warm and your windows will fog up inside. Heater core is more common. Joe ASE Master Tech

Posted on Mar 05, 2009

  • 625 Answers

SOURCE: 98 chevy astro van

mmmmmmmm they are really hard to replace but most likelly is goin to be a intake gasket, i do recomend you to call arrown the auto repairs and ask for a pressure test to the cooling system
this test is not that expensive and will tell you exactly where is the leak coming from, but on this type of vehicles i badly see a freeze plug leaking.

Posted on Aug 21, 2008

  • 2920 Answers

SOURCE: 1991 Suburban has water leak on drivers side floor when it rains.

it sounds more like your heater core is leaking than anything else

Posted on Mar 06, 2009

  • 366 Answers

SOURCE: 2001 Chvy van: overheat+water leak/from strange(new?) hole

seems u have a blown head gasket or cracked head!

Posted on Mar 18, 2009

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