Question about 1999 Nissan Maxima

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Water leaking water is running out of the engin past the alternator, air con pump. can you tell me if the water pump is leaking will the water run out here or will go in to the sump and make oil go white This has the 2.5 QV engine in

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Check your car oil if its already white! if its not, its leaking outside!
fill the radiator but make sure you dont overspill it so you wont get some parts wet, wipe/dry wet parts, start engine for a while then try to see where water is coming from. if you haven't seen it but other parts have gone wet, stop engine. then
carefully check on water hose connections and water pump gasket.check for drips, water will definitely run out from it!
hope i could help you more!

Posted on May 24, 2009


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I have a 2000 chrystler cirrious lxi it keeps leaking antifreez on btm left side if engine under belts cant tell why or where

You will need to get the car up on a hoist/lift to have it inspected from the underside where the leak will be easier to identify.

I suspect the leak is coming from the water pump seal which has deteriorated with use and age and coolant is seeping out. This is not at all uncommon on older installed pumps. When the engine is running the coolant is pressurised so it will escape faster if there is a leak. The water pump sits on the engine and has a pulley on the end of it. It is driven, together with other components, by the serpentine belt that runs off the engine crankshaft pulley.

If a failed WP seal is the source of the leak you would replace the entire water pump and seal with a new items unless the pump has been replaced in the past few years or so and has seen few miles. Pumps need to be replaced periodically in the life of an engine and you have to remove the pump to replace the seal so you would install a new pump at the same time.

Have the leak issue professionally checked out.

In the mean time keep the coolant level topped up to full when the engine has cooled and have it on hand to top up when needed. So check frequently. Make sure the correct coolant is used as you cannot mix coolant types. If you let the coolant run low your engine will overheat and that WILL usually cause expensive engine damage.

Apr 05, 2016 | Cars & Trucks

3 Answers


You are not telling us the make, model, year, and engine size. But, based on many years of experience, when the mystery of the vanishing water occurs, it is usually an indication that you are going to be needing a water pump very soon. There is a tiny "weep hole" under the drive pulley of the pump that lets a small amount of water leak past when the pump shaft bearing is wearing out. This is a "tattletale" indication to tell you to replace the pump before total failure. The reason you don't see leaks is that this will only leak when the vehicle is running, and the the water usually evaporates on the engine block. If you can see the water pump (not possible on all cars), you may be able to see a discolored trail running down from the weep hole.

Dec 31, 2014 | Cars & Trucks

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I have water pouring out from the top of the engine block, but not from the water pump. Can't see exactly but looks like the leak is behind and above the water pump. Can you tell me the most l

If its not from the water pump or hose it is most likely from a rusted out welch plug , This happens if the coolant is not replaced when needed . To do a good repair replace them all . For a bit extra money find brass plugs, end of problem . replace with good coolant.

Oct 13, 2014 | 1999 Ford Explorer

1 Answer

How do i tell if waterpump is bad the water is evporating everyday

    • 1 Park your car overnight and put a large white piece of paper underneith your car. In the morning check the paper. If the paper is wet with liquid, you could have a water pump leak.
    • 2 If the paper has green (in most cases) fluid on it, there is a good chance your vehicle is leaking coolant (sometimes refered to as "water"). In many cases, when you are leaking coolant it could be coming from the water pump.
    • 3 Turn the engine off and open the hood.
    • 4 Locate the water pump pulley. The pulley is the round part that the belt is attached to. To find it, look for the belts. You will see more than one pulley. Your car will have an alternator with a pulley and perhaps an air conditioner, power steering and smog pump pulleys. If you are unsure, ask your mechanic to point out the water pump pulley.
    • 5 Grab opposite ends of the round pulley and check for "play" (looseness): Try to rock it back and forth. There should be no give. If there is, the bearings are going and it's time to replace the water pump. By the time you can feel play in the water pump pulley, you may also be able to hear the bad bearing when the engine is running - there may be a low-pitched grinding noise coming from the water pump pulley.
    • 6 Visually check the water pump (it's located behind the pulley) for signs of a coolant leak. If the water pump gasket is leaking, it must be replaced. This is a good time to get a new water pump, too, unless it was just recently replaced.

Feb 27, 2012 | 1998 Cadillac DeVille

1 Answer

I have a 1999 Lexus LS-400. Appears to have charging problems (ABS, VSC, & Battery lights on). While running if I disconnect red terminal, car remains running (alternator). Starter checked was OK....

firstly check with your car scanner ,read for fault code, as my experience the alternater fault due to leak in alternator regulator ,check with multimeter for your voltage, at least with light and air con on, it should at least 13.6volt.normally with alternator light on when engine running.conform alternator,replace one thank you

Apr 05, 2011 | 1999 Lexus LS 400

1 Answer

Ford mondeo 2002 Zetec 2.0 motor ..Have a small or slow water leak comming from front of motor behind water pump area ,above air con unit, where water hose goes into the motor ..very hard to see where it's...

Starting from the top down dab every joint and seam with kitchen paper towel. Between each dab and press examine the kitchen towel for dampness. It is vital that you find out exactly where the leak is coming from. You could be lucky and the leak might be fixed buy an extra half turn on a jubilee connector on a hose union or a quarter turn on the water pump or thermostat housing bolts. If the leak persists you may require a new gasket . If the leak is from the water pump shaft seal behind pulley you will see a tell tale stain on the 'chin' of the pump body. This will require a replacement of the pump.

Sep 02, 2010 | Ford Focus Cars & Trucks

1 Answer

While idle cuts off when air condition is on

Solution: 1. The engine has Idle Air Controller (IAC) that is suppose to keep the engine speed at a constant (even with changing load - AC, FAN, etc.) If the IAC is broken your idle will be rough or even die.
The AC compressor places a large load on your engine.If there is a problem with your IAC(Idle air controller)which is located on the throttle body it will cause the vehicle to die when you turn the AC on.Remove the IAC and check it for carbon.If there is carbon try to clean it up with a wire brush.
2. If your air con is drawing more power than your alternator/battery is capable of supplying - you could try fitting a higher charge rate alternator and a heavy duty battery also ensure battery to chassis earth is sound and clean of rust and grime at metalwork.
3.Another reason for this is that when the air con is on, ice and water forms on the outside of the air con pump and condenser. This ice and water can spray around the engine bay and if there is any electrics that are around it can cause a short circuit.The easy way to fix this is to identify the air con pump and condenser, then spay WD40 on all the electrical components you can see in the direct area.
WD40 displaces water and will cause no problems with the cars electrics.

May 08, 2010 | 1994 Honda Accord

1 Answer

Loss of antifreeze

Bit odd that mechanics cant find it but here are a few suggestions:
1. A damaged seal on the water pump. As the water in the cooling system is both hot and under pressure when the engine is running, and the pump shaft rotates at high speed, water leaking past a water pump seal will be thrown off the water pump shaft and evaporate very quickly. When the engine is stopped, and the water cools the pressure reduces and so doesnt force the water past the seal, so apears to be okay.
2. A core plug in the engine block has rusted through enough for a very small leak to occour, again when the engine is hot. Core plugs are very often obscured from view by ancilaries such as ignition parts, alternator, exhaust, etc, so are very difficult to see when the engine is running.
3. Rubber hoses can become porous as they get old (10 years is plenty old enough) and as for the two possibilities above, only "leak" when the engine is hot so even a very close visual inspection may not show the leak.
4. If you can smell antifreeze inside the car, particularly when the engine is hot, then you may have a leak on the heater matrix which is like a mini radiator inside your dashboard. If you find the car steams up a lot even on a warm and dry day, this is a good indicator of a leaking heater matrix.

I have personaly fixed "untraceable" water leaks atribuitable all of the above over my years of working on cars. Unlike a proffesional mechanic, time wasnt money for me so I spent many hours finding some of them. Good luck !

Sep 22, 2009 | 2003 Volkswagen New Beetle Convertible

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I have water leaking from the engine, but don't know where from. The radiator has been changed the water tested for emmissions, pressure tested and still water is leaking. The heating blows hot when...

if you see the water leaking form the front side of the engine usually from the water pump since the pump is not running you also wont get heat, bit when you pressurise the sys you are forcing the hot water into the core and you have heat, it is the water pump.

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2 Answers

1966 Ford Mustang overheating

try to run the water pump without hoses, and add water in the 'in' side, if is powers out the other side, then it's fine. how is your water/coolant mix?

Dec 01, 2008 | 1966 Ford Mustang

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