Question about 1994 Nissan Quest

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I do not know what it is called but there is apipe or hose coming from the water pump and going under the manifold that leaks coolant. where can i find one and what is it called 1994 nissan quest xe 3.0 v6

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  • Nissan Master
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THAT CALLED COOLANT BYPASS HEATER PIPES.

Posted on Aug 27, 2010

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I need to know what the pipe is called that the lower rad hose hooks up to at the back of the 3.0L automatic


its the water pump inlet tube , if its leaking coolant its more than likely the water pump if thats why you asking the question , worked on plenty of those engines and the weep hole for the water pump when the seal goes it leaks out and runs down under the intake manifold at the rear of the engine , timing belt water pump service end result

Jul 07, 2014 | 1998 Plymouth Grand Voyager

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Coolant leaking from under engine 97 5.7l silverado


It is most likely the water pump, the air flow under the engine causes the coolant to go back under the truck. Fell under the front of the water pump for moisture or a slimy liquid.

Oct 26, 2012 | Chevrolet Silverado 2500 Cars & Trucks

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My s 430 has smoke coming from under hood after driving but not all the time temp gauage reads normal. I had oil and trans leaks sealed but it is still happening, what else could it be? Thanks


SMOKE UNDER HOOD COULD BE COOLANT LEAK FROM RADIATOR ITSELF OR CHECK FOR LEAKING TOP RADIATOR HOSE AND CHECK FOR LEAKING BOTTOM RADIATOR HOSE.LOOK UNDER THE HOOD IF COOLANT BOILING OUT COOLANT OVERFLOW JUG ENGINE OVERHEATING FROM BAD THERMOSTAT OR BAD WATER PUMP.CHECK FOR COOLANT LEAK AT WATER PUMP WEEP HOLE.IF SO WATER PUMP NEED REPLACING.ADD MORE COOLANT UNTIL LEVEL CORRECT.TRY LOCATE LEAK. IF CAR OVERHEATED AND BOILED IT OUT. SMOKE UNDER THE HOOD CAN ALSO BE CAUSED BY LEAKING VALVE COVERS WHICH CAN BE FIRE HAZARD IF OIL LEAKS ON HOT EXHAUST MANIFOLD.

Mar 21, 2011 | 2002 Mercedes-Benz S-Class

1 Answer

I HAVE ANITFREEZE LEAKS FROM MY 2000 CHEVY S10 BLAZER. IT'S HARD TO TELL BUT THE LEAK SEEMS TO BE COMING FROM UNDER THE MOTOR RATHER THAN FROM THE RADIATOR OR ANY HOSE I CAN SEE.


a common V6 failure is the intake manifold gasket. coolant will usually leak behind the water pump on the drivers side, however it can leak at other locations on the intake manifold gasket.

coolant leaks from other areas include the heater core, hoses, expansion plugs, trans cooler, and coolant overflow tank.

Jan 03, 2011 | 2000 Chevrolet Blazer

3 Answers

I smell coolant and I see a little in the front above the water pump..where would the coolant be leaking from. Also my check engine light keep coming on. Would this problem that I am having with the...


On the under side of the water pump there is a hole called a weep hole its there to let you know that the seal is leaking on the pump and will need to be replaced soon so you don't have a major failer on the highway and damage your engine

Dec 12, 2010 | 2002 Chevrolet TrailBlazer

2 Answers

Is there a way to know wheither its the water pump or a hose if you car is losing antifreeze? The car doesnt seem to be leaking when it is idle in the parking spot but when i come home frome a ride the...


it could easily be burning the antifreeze through a bad head gasket. if when warmed up the upper hose is quite stiff indicating the system is under pressureand you shut it off,even waiting until the radiator fan comes on and then right away turning of the key,wait and see iff anything runs out.the water pump would have to be looked at from below while the leak is ocuuring= reason must mechanics suffer a lot of burns. or with a sall extendable saft mirror. you could also loose antifreeze from a heater core leak but that would give a lot of steam on your windshield inside in the cold weather,or the carpet would be wet inside the car

Feb 21, 2010 | 1991 Chevrolet Beretta

2 Answers

Coolant leak


i cant tell you exactly what it is cause im not ther but you have to go under the car and detect where the leak is coming from....try radiator stop leak if it is a smaller leak it will stop it for a couple weeks. if it is a large leak as i think ur saying go under the car get a rag and clean off the fluid. keep on looking towards the top(on water pump, on engine block by intake manifold)and see where its coming from...i had the same problem it was my water pump...if its the manifold and its small get hight temp RTV sealer an try that....could be loose hoses or crack in radiator...you gotta look. good luck

Nov 24, 2008 | 1994 Chevrolet Caprice Classic

2 Answers

My daughter's 1997 Saturn is leaking coolant and overheating..


Coolant leaks can occur anywhere in the cooling system. Nine out of ten times, coolant leaks are easy to find because the coolant can be seen dripping, spraying, seeping or bubbling from the leaky component. So open the hood and visually inspect the engine and cooling system for any sign of liquid leaking from the engine, radiator or hoses. The color of the coolant may be green, orange or yellow depending on the type of antifreeze in the system. The most common places where coolant may be leaking are:Water pump. A bead shaft seal will allow coolant to dribble out of the vent hole just under the water pump pulley shaft. If the water pump is a two-piece unit with a backing plate, the gasket between the housing and back cover may be leaking. The gasket or o-ring that seals the pump to the engine front cover on cover-mounted water pumps can also leak coolant. Look for stains, discoloration or liquid coolant on the outside of the water pump or engine.Radiator. Radiators can develop leaks around upper or loser hose connections as a result of vibration. The seams where the core is mated to the end tanks is another place where leaks frequently develop, as is the area where the cooling tubes in the core are connected or soldered to the core headers. The core itself is also vulnerable to stone damage. But a major factor in many radiator leaks is internal corrosion that eats away from the inside out. That's why regular coolant flushes and replacing the antifreeze is so important.
oses. Cracks, pinholes or splits in a radiator hose or heater hose will leak coolant. A hose leak will usually send a stream of hot coolant spraying out of the hose. A corroded hose connection or a loose or damaged hose clamp may also allow coolant to leak from the end of a hose. Sometimes the leak may only occur once the hose gets hot and the pinhole or crack opens up. Freeze plugs (casting plugs or expansion plugs in the sides of the engine block and/or cylinder head). The flat steel plugs corroded from the inside out, and eventually eat through allowing coolant to leak from the engine. The plugs may be hard to see because they are behind the exhaust manifold, engine mount or other engine accessories. On V6 and V8 blocks, the plugs are most easily inspected from underneath the vehicle.
Heater Core. The heater core is located inside the heating ventilation and air conditioning (HVAC) unit under the dash. It is out of sight so you can�t see a leak directly. But if the heater core is leaking (or a hose connection to the heater core is leaking), coolant will be seeping out of the bottom of the HVAC unit and dripping on the carpet. Look for stains or wet spots on the bottom of the plastic HVAC case, or on the passenger side floor.
Intake Manifold gasket. The gasket that seals the intake manifold to the cylinder heads may leak and allow coolant to enter the intake port, crankcase or dribble down the outside of the engine. Some engines such as General Motors 3.1L and 3.4L V6 engines as well as 4.3L, 5.0L and 5.7L V8s are notorious for leaky intake manifold gaskets. The intake manifold gaskets on these engines are plastic and often fail at 30,000 to 80,000 miles. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4.0L V6 engines.
INTERNAL COOLANT LEAKS
There are the worst kind of coolant leaks for two reasons. One is that they are impossible to see because they are hidden inside the engine. The other is that internal coolant leaks can be very expensive to repair.


visit for more info:

http://www.aa1car.com/library/coolant_leaks.htm

Nov 24, 2008 | 1996 Saturn SL

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