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Where can nissan3.3 loose water it does not over heat and it is not heater rad pressure drops while doing pressure test but nothing can be seen

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The housing behind the pump impeller corrodes into small pin holes and water gets to the sump
check for grey colored oil
next is rust holes at the welsh plugs , normally at the back plugs in the block
check under the water pump housing for a small drain hole
this hole is used to drain water away from the bearings when the seal fails

Posted on Jan 01, 2017


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2 Answers

Loosing coolant

Is it leaking externally that you see? If so, you may have leaking freeze plugs on the engine block or cylinder head. If it is not external, then check the exhaust. Are you getting white smoke? Does the exhaust have a sweet smell? You could have a cracked cylinder wall, cylinder head, or blown head gasket. Check the floor inside the vehicle. Is it wet anywhere, especially passenger side front. It could be a leaking heater core. If all else fails, have the system pressure tested by a mechanic to find the source of the leak. Some can be very hard to detect.

Jan 26, 2016 | 2000 Jeep Grand Cherokee

1 Answer

Ignis 1.5 sport 04

post all signs of overheating.
  1. dash guage
  2. STEAM eruptions>?
  3. AF (antifreeze ) leaks?
  4. CHeck engine light sticks on running?
  5. Scan tool shows way hotter than 200F? "ECT PID" parameter.
  6. oil in the AF? cold you see oil floating in the neck of the rad cap off?
  7. AF found on the A/T tranny dip stick end?
  8. Loosing coolant (drops) all the time, Check rad directly cold.?
  9. engine pings, (knock/detonation) ?
  10. lost power. from engine.
  11. shaking of engine. as it misfires.
  12. car heater makes this odd gurgling sound?
those are the signs but. what about precondtions.
overheats only parked< and never moving fast>
yes, bad RAD fan, (or its controls)
over heats all the time>?
fan belt fell off or slips?
clogged, rad tubes. (inside)?
water pump bad, blades, rusted to nothing.?
thermostat died, as most do way before 10 years,,,,,,,
clogged system from not doing the 2year service.

Mar 15, 2014 | Suzuki Cars & Trucks

1 Answer

How can i ell if my water pump is failing

over heating has many causes.
what are the signs, just the gauge going high. ?
steam shooting out rad cap. (is the cap even good>?)
side recovery tank, blasting? with hot water and steam.
oil in the RAD neck , (cold engine) RAD=Radiator assembly.
antifreeze "AF" in the engine oil>? (dip stick looks like milkchocolate?
leaks to the ground, from what?? (find it)
does the RAD fan come on , overheated, It must. does it?
is the RAD core clean? outside, ? not packed with bugs and leaves.
the #1 failure part is the thermostat. put in a new one. and cap.
they are cheap . and easy to change out both cap and STAT.
are you running 50% AF? , using the Prestone $2 tool for the test?
AF raises the boiling point of water, to 260?F
the cap holding pressure and the AF both raise it that high.
if car does not over heat, moviing, only, nows that time to say so..
get in car, cold , drive did it overheat with no stop signals?
(moving gives free air flow to the RAD, proving it works)
Use the radiator leak down tool. to see of loop is beached.
Use the Exhaust gas detector tool at RAD cap to see if the head gasket is blown.

how do you know the pump is. bad.
1: it leaks
2: the impeller is dust.
3:ITS pulley wobbles like mad.

my answer, the pump is after all other test pass.
including a RAD core, thermogram
i can check each rad tube 1 by 1, in fact i threat my RAD
as 10 or more tiny radiators (it is)
see 50 mile test here, RAD cores
They get 34f degree tube drops.. each tube must drop or its clogged.
all for a $15 tool and no burned fingers.
measure each tube about 2inch from top of tank and bottom
and both tanks. (this test is very revealing)

Feb 15, 2014 | 1991 Acura Legend

1 Answer

Loosing rad fluid

check the drain hole under the water pump. Check the welsh plugs in the block and head for rust stains. Have a pressure test done on the cooling system. Check for wetness under the heater.

May 26, 2013 | 2007 Chevrolet Trailblazer

2 Answers

The cars heat is fine then when i start to slow it starts to cool when i am idle it gets colder

you probably have air trapped in the cooling system.

try to burp air by loosening radiator cap with engine cold. Then as it heats up and thermostat opens (upper rad hose will be hot) and it should burp the air. Then shut off engine and top off radator and tighten cap. Keep reservoir full so radiator can **** the coolant into the engine.

This assumes the engine tempstays in normal range. If gauge drops to colder, then replace the thermostat.

Jan 25, 2011 | Nissan Sentra Cars & Trucks

2 Answers

89 Gas F 150 Completely flushed engine,rad and heater hoses and put in a new 195 thermostat and a new water pump and still the coolant wont circulate. Bottom hose is ice cold ,top hose is warm and cab...

yeah it sound like there is an obstruction in the coolant system. check pressure with cap pressure of the hoes inner lining may have collapsed which cant be seen from external viewing.hope this helps

Dec 22, 2010 | 1989 Ford F 150

1 Answer

The engine in my 99 venture van wont stop overheating?i have put a new thermostat in and assured that the cooling fans are working properly??anyone???

Your water pump may be defective. The impellor may be loose. When the engine is cool, open the rad cap & start the engine. As it heats up & the thermostat opens, look in the rad and see if you have enough circulation of fluid. If not, change the water pump. Check to see if the rad fins are not loose & in good shape. If not, change the rad. Pressure test the rad cap in order to make sure it is holing the proper pressure. Hope this Helps you. Good luck!

Oct 19, 2010 | 1999 Chevrolet Venture

1 Answer

My Grand Prix is 1996 2 door and it is over heating but there is water and antifrzze in it what can i do to fix the problem the owner before me had it sitting for 2 years and they had took out the...

There could be a number of problems. The first is a ceased thermostat. Change it. The water pump impeller may be loose & not pumping enough antifreeze through the system. Change the water pump. The rad may have excessive loose fins. Change the rad. Pressure test the rad cap to see if it is holding the proper pressure. Check the serpentine belt for wear & slippage.Change belt if necessary. Pressure test entire system for other leaks i.e. head gasketetc. Good luck!

Oct 18, 2010 | 1996 Pontiac Grand Prix

2 Answers

Loosing radiator water and no heat from heater

Fill radiator & pressure test the system. You will need a rad pressure tester for this operation. Also check the oil & oil dipstick for white residue in the oil . Antifreese may be leaking into the oil. Do the tail pipe finger test to see if there is a fowl burnt antifreese smell. This could spell a head gasket problem. Also check for signs of wetness on the passenger side floor mat. This would indicate a heater core leak. Check all hoses & connectios fof leaks. Good luck!

Dec 01, 2009 | 1996 Chevrolet Blazer

1 Answer

Car overheated alot of water leaking out the

First find exactly where the water comes from.
broken hose or hole in radiator - if no leaks here then :-
broken / loose drive belt to water pump - sign is no heat to internal heater
thermostat stuck - heats up and overheats quickly. water from exits rad cap area
also check radiator cap - should be sprung to contain water under pressure, usually these are very reliable

check oil filler cap [inside of] - should be oily and grey/black If it has a covering of what looks like soft brown aireated jelly then possibly hear gasket or other internal engine leak between water & oil ways. The excess pressure from engine will force water out of rad cap area . A compression test with variable readings for between cylinders will confirm this. Hope its not this. It's expensive

Sep 07, 2009 | 1999 Oldsmobile Intrigue

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