Question about 1998 Toyota RAV4

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Water draining from radiator ,leaking from near engine

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Most possible cause is your water pump, have it replace before locks up an takes out your T-belt

Posted on Mar 27, 2011


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Possibility of a cracked block. how can i be sure/

Vehicles: Any with the above symptoms

A cracked cylinder block will cause either:
(a) motor oil contamination of engine coolant
(b) coolant contamination of motor oil
(c) white exhaust smoke, due to coolant seeping into one or more cylinders.
(d) more than one of the above
(e) all of the above

Oil infiltrating into coolant is easy to see - drain some coolant out through the pepcock at the bottom of the radiator, and place it into a styrofoam coffee cup. Oil droplets floating on top of the green (or orange) coolant are easily seen. Or visualize oil by looking into the top of the radiator through the radiator cap.
Coolant infiltrating into and mixing with motor oil will permanently damage the engine (seizing it up through loss of lubrication), and must be prevented.
A leak from above the front suspension is, as physicians like to put it, "nonspecific", with the most likely cause a water pump seal or hose/hose connection.
A leak from near the fire wall will usually be a heater core hose, or hose connection.
A coolant leak on the same side of the engine as the water pump is a leaking water pump or water pump seal until proven otherwise.

To rule out everythng else, here's the 1999 Honda CR-V Troubleshooting Guide for Coolant Loss/Coolant Leaking:

Priority Action Part Type Cause
1 Inspect Water Pump - Worn, Cracked or Leaking Water Pump, or Water Pump gasket.
2 Inspect Head Gasket - Leaking Head Gasket.
3 Inspect Radiator - Leaking Radiator Hose(s).
4 Inspect Radiator Cap - Worn or Damaged Radiator Cap.
5 Inspect Radiator Hose - Ruptured, Cracked or Leaking Radiator Hose.
6 Inspect Freeze Plug - Leaking Freeze Plug(s).
7 Inspect Intake Manifold Gasket - Leaking, Worn, or Damaged Intake Manifold Gasket.
8 Inspect Water Outlet - Cracked, Leaking or Damaged Water Outlet.
9 Inspect Heater Control Valve - Leaking or Faulty Heater Control Valve.
10 Inspect Radiator Drain Pepcock - Loose, Damaged, or Faulty Radiator Drain Pepcock, or Pepcock O-ring.
11 Inspect Engine (DOMESTIC ONLY) - Cracked Cylinder Block Leaking Coolant into at least one Cylinder, causing white exhaust smoke.

Dec 03, 2011 | 1999 Honda CR-V

1 Answer

Change thermostat

Hi, you have to follow the instruction below to remove and replace the thermostat....
  • Disconnect the negative battery terminal with a socket wrench. Always use a socket wrench or close-ended wrench on the battery connector so you don't ruin the head of the bolt.
  • Drain antifreeze from the cooling system. The simplest way to do this is to have the vehicle on jack stands. Open the radiator cap to relieve pressure -- make sure the engine is cool before you do this. Use a bucket or pan to catch coolant under the radiator. Open the radiator drain on the bottom of the radiator with pliers or by hand. The 3.1L engine has an air bleed valve on the throttle body which you should open two turns.
  • Remove the drain plugs located on the underside of the block just above the oil pan and let the coolant drain into your pan or bucket. Close all the drain plugs.
  • Unbolt the the water outlet from the thermostat, if your Cutlass has a four-cylinder engine. All other models have the water outlet on the intake manifold. Remove the outlet and the thermostat. If your Cutlass has cruise control, remove the vacuum modulator bracket from the thermostat housing.

  • Use the scraper tool to clean the surfaces where the thermostat and engine block meet. Apply a bead of RTV in the water outlet groove.
  • Put your new thermostat in place on the housing. Make sure the side with the spring goes towards the engine. Tighten the thermostat bolts with the torque wrench to the specifications provided. Remember that tightening specifications for the mounting bolts vary between parts manufacturers. If your engine has an air bleed valve near the throttle body, close that too.
  • Check that you have closed and tightened the radiator drain and the two drain plugs near the oil pan. Pour the coolant back into the radiator, adding extra coolant if necessary to fill to the base of the radiator neck. Fill the radiator overflow tank to the "FILL" mark with coolant.
  • Leave the radiator cap off, start and idle the engine. The coolant level visible in the radiator should drop slightly. Fill it back up to the base of the radiator neck. Put the radiator cap back on and make sure the arrow on the cap points towards the overflow tank. With the engine still idling, squeeze the outlet hose with your hand. The outlet hose is the big one that connects to the top of the radiator. If you feel it getting hot, this tells you the thermostat has opened up and is functioning properly.
  • Turn off the engine. Check for leaks on hose fittings and around the drains. Check that the hoses all appear sound and that none are leaking or cracked.

Dec 06, 2010 | 1996 Oldsmobile Cutlass Ciera

1 Answer

Water dripping right front underneath

Is what the liquid plain water or coolant (water mixed with antifreeze). touch and smell the liquid, no smell = water, antifreeze smell and oily feel = coolant.
If plain water, could be Air Condition condensation dripping from condensation drain which is normal. (this drain is usually located near the center of the vehicle).
If coolant, could be leak(s) from: radiator, radiator hose, heater hose, water pump, engine freeze plug. A coolant system pressure test should show what is leaking.

Oct 06, 2010 | 2005 Hyundai Santa Fe

1 Answer

Were is the drain **** for the radiator 2005 expedition?

Hello! The drain plug is located near the front passenger side wheel well...Open it up and drain the radiator... What I like to do next is remove the t-stat and replace waterneck... Now fill radiator with water (actually fill degas bottle) and run engine with upper hose removed at radiator... Flush until only clean clear water comes out of hose... Drain radiator, replace t-stat, fill radiator with coolant and you're done...Guru....Saailer

Oct 04, 2010 | 2005 Ford Expedition

1 Answer

Have to replace water pump on 98 Ford Taurus. Any hints or suggestions would be appreciated before I get out in the snow and cold to fix this.

You can change the water pump by doing these steps:

  • With the engine off and cold, o pen the hood and locate the vehicle’s radiator and water pump.
  • Remove the radiator cap.
  • Install a pressure tester on the radiator. Apply the pressure indicated on the radiator cap or in the owner’s manual.
  • Inspect the water pump for leaks. Remove the pressure tester.
  • Place a drain pan under the radiator. Open the drain valve or remove the lower radiator hose to drain the cooling system.
  • Remove the drive belts or serpentine belt.
  • Remove any hoses connected to the water pump.
  • Unbolt the water pump from the engine. Remove the water pump.
  • Using a gasket scraper, clean the mounting surface on the engine block.
  • Install a new gasket and attach the new water pump to the engine with the original mounting bolts. Tighten the bolts to the manufacturer’s specifications.
  • Re-install any hoses and belts that were removed.
  • Re-install the drain plug or lower radiator hose.
  • Refill the radiator with a 50/50 mix of coolant and distilled water. Pressure test the cooling system and check for leaks.
  • Check and fill the overflow reservoir with coolant.
  • Leave the radiator cap off and start the engine. Idle the engine to remove trapped air from the cooling system. Add coolant if necessary.
  • Install the radiator cap.
  • Road test the vehicle and monitor the temperature gauge. If the vehicle runs hot, there may be an air pocket in the cooling system. Allow the engine to cool off and add the necessary coolant.

Feb 12, 2010 | 1998 Ford Taurus

1 Answer

Ive got water pouring from the right hand side of the block when i fill my radiator. Its a ford focus saloon 2001 2.0

Hi !
When you sat "Block" you mean from the radiator block or the engine Block.???
Its easier to repair radiarors.
If its the engine block .... cleck if the water is leaking from the side wall or there is a drain tap that is not closed properly..... this is near the lower portion of the block on the right hand side .....if it is from the drain tap then you are lucky... just tighten it...
you will need to find the exact place of leak and block it with an industrial adhesive.
This usuall happens when you try to fill the radiator with cold water while the BLOCK is still HOT. The metal cracks.


Feb 01, 2010 | 2001 Ford Focus

1 Answer

97 Buick skylark w/3100 v6 engine has a water leak from the back right side of the engine after it warms up. The hoses from the engine to the heater core that I thought were the problem are fine. Water...

is it water or coolant, and do you have water in the radiator or antifreeze, i asume you have coolant so the leak is water then it coming from the heater box which is normal, the water is condensation from a/c so if the a/c is on or defrost you will get water drain out this is normal operation.hope this is helpful.

Dec 24, 2009 | 1997 Buick Skylark

2 Answers

Small coolant leak at front of engine hose area, not always maybe 1 out of 5 times driving to work.

If you can narrow down where the leak is coming from, it will be easier for you to fix, but it is most likely either a minor radiator leak, or your water pump. You can put a can of radiator stop leak in your vehicle, such as bars leak. It wont hurt anything. If the leak continues, and appears to be coming from the engine area, the water pump is failing, but also check around the thermostat housing, near where the upper radiator hose connects to the engine

Nov 19, 2009 | 2001 Chevrolet S-10

1 Answer

I have a BMW 2000 316 Ci that has been using a lot of water. My mechanic had it at the weekend and replaced a hose near the head gasket but it still has the same problem, it however is not overheating

have coolant system pressure test.what they do is pressurize your coolant.about 14 psi look in radiator for bubbles if so you have head gasket leak. or they drain oil out leave drain plug out to see if coolant come out crank case.that also means leaking head gasket or intake gasket.they will look for leaks around radiator +all hoses.look at water pump gasket weep hole.for leaks also check engine core plugs for leaks.they will make sure you have 50% coolant and 50% water .if you have too much will evaporate away.

Jun 22, 2009 | 2000 BMW 3 Series

2 Answers

Finding the drain for the radiator

I've a 1986 Trooper and the radiator drain has yet to be found.

With the engine cold drain the water via the lower hose. Reconnect the hose then add water run the engine until warm to hot, opening the thermostat. Turn engine off and pull the hose again to drain the water again it should still be dirty as in rust. you may have to repeat a few times, when the water drains clear then put antifreeze and top off with water. Be sure the hose is clamped tight and no leaks.


Jul 26, 2008 | 1986 Isuzu Trooper

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