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Why do I have minimal water pressure? - Cars & Trucks

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If you have a pressure tank it may need air added to the bladder. How much depends on what electrical box is hooked to pump.no less than 18psi for a 20/40 box 28psi for a 30/50 box and 38 for a 40/60 box.

Posted on Apr 19, 2017

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Bad pump

Posted on Apr 19, 2017

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1 Answer

Can u add water to the radiator on an eclipse auto


firstly if you are finding that your coolant level is droping and you are having to top it up , there is a problem some where. the coolant system in this vehicle is sealed and at operating temperature even under pressure . coolant leaks are not always easy to locate as it can be behind a cover or simply a hose clamp loose and in a hard spot to view. I would highly recommend that you locate where the coolant is going as it is a serious problem if you overheat the car & the repair $ will be a lot more. If you have trouble finding it , getting a pressure test done at a local workshop would be the go, the cause of this problem wont go away on its own and adding coolant or water is only treating the symptoms to the bigger problem. how ever that was not your question , so if it is needing regular daily top ups I wouldn't waste my money with coolant I would only be adding water , but also id be addressing the real issue promptly, if it is only minimal and not that regular I would be still using the correct coolant for that vehicle. coolant has a few purposes one being a corrosion inhibitor, every manufacturer uses different metals in there engines and that is why there are different types of coolant to suit the different types of metals used so it is imporntant to use the correct one so it protects your engine correctly, coolant also raises the boiling temperature as well as lowers the freezing temp so if you are in a very cold climate it will help the coolant system not freeze solid when not running . it it freezes it can crack the block, if you are in a cold climate I wouldn't alter the mixture rate at all to be safe.. so the answer to your question is yes you can do either just water and get the problem fixed asap. or if it is only very minimal look up in the hand book for the recommended coolant and percentage that is required and stick to that. hope that helps you.

Sep 25, 2014 | 2005 Mitsubishi Eclipse

1 Answer

How can I stop water coming through the air line on Hydrovane 139 CWD


you will always get a small amount of moisture coming through your air hose, but sometimes it can be minimized by draining the water accumulation in the tank by bleeding it out from the bottom plug. make sure that there is no pressure in tank before you remove the plug to drain water.

Sep 15, 2014 | Cars & Trucks

3 Answers

What controls pressure in cooling system 1.5dci renault


I agree with Mike, but suspect you already have a measuring device to know the pressure is excessive. You should get the cap checked first.

But additional pressure that keeps coming out of the radiator above the release limit of 14-18 lbs is probably due to escaped compression from the engine cylinders. You will see bubbles inside the radiator while the engine runs.

Sometimes you will get water in the cylinder after the engine sets under pressure, but not always. Your engine works at about 140psi in the cylinder more or less. The radiator at 14-18 psi. A leak in a head gasket may take more than 14-18 psi to leak. So the leak acts like a one-way valve shoving air into the cooling system. Since the cooling system loses pressure as it cools, the water may not flow back into the cylinders when the engine is not running.

This is sometimes indicated in a cylinder bleeddown test where high pressure is shoved into the cylinder. Bubbles may be observed in the radiator from escaping air. Otherwise a compression drop in a cylinder may as easily be due to bad rings.

I hope my solution is helpful.

Sep 01, 2012 | 2005 Renault Megane

2 Answers

Overheats---put new thermostat, changed radiator hoses, head gaskets are ok; still overheats


If you did not replace the water pump it could be the issue. Or you still have air bubbles trapped in the system.

Mar 10, 2011 | 2000 Oldsmobile Intrigue

1 Answer

1999 Taurus, no heat. Not good with winter coming.


If the coolant is full and the thermostat is bringing the temperature of the engine up to par than I would bet with 95% certainty that the heater core is plugged.

You can try back flushing it. You'll need a pair of pliers, a drain bucket, a piece of heater hose the same diameter as the heater hoses (about 3/4"), and a couple of needle nose vice grips. Pinch off both of the heater hoses at least 6 inches or more from where the attach to the heater core with the needle nose vice grips. This will minimize coolant loss from the engine. Put a drain bucket under the car to catch any coolant that runs out (by the way this is going to make a huge mess). Remove the clamps and heater hoses from the heater core. install the short piece of 3/4 inch heater hose onto a garden hose. Install the other end on one of the heater core tubes. Using low water pressure flush the heater core. You should see a lot of nasty stuff come out. Repeat on the other heater core tube. Continue this process until the water runs clear.

Reinstall the heater hoses, remove needle nose vice grips, Top off the coolant in the radiator, start the vehicle and let idle. Continue to monitor the coolant level and add as necessary. You should start to get some heat with the blower setting at low. If the heat goes away at higher settings than you'll need to repeat the procedure described above. Sometimes driving for a couple of days will help loosen up the debris in the heater core.

Also if the coolant is really dirty that it will help too have the cooling system flushed as well to prevent the debris in the coolant from settling in the heater core after you have flushed the heater core.

There is always the possibility of the heater core leaking after an attempt to flush is made. Using low water pressure will help minimize this.

Oct 05, 2010 | 1996 Ford Taurus

1 Answer

When the temp is over 90 outside, air conditioner will only cool for short time, then will start to blow hot air and overheat. I have replaced the thermostat twice, water pump, radiator, sensor, and...


Any coolant loss is significant in any car. Having replaced all those components leaves only the gasket or head as possible suspects.The gasket can fail in an area that does not allow oil to mix with the coolant and the same applies to possible cracks in the heads or warping. Have the system pressure tested to see if it has leaks.

Jun 21, 2010 | 2002 Lincoln Continental

1 Answer

At highway speed vehicle just died as if ignition was turned off. no sputter just died. cranks but no start


check for fuel and pressure if no fuel or minimal pressure possible fuel filter and or pump

Apr 20, 2010 | 1999 Lincoln Continental

1 Answer

Heat coming out of vents minimal. alrdy replaced thermostat


after car has ran some time squeeze top radiator hose to see if it has pressure. if not replace radiator cap. you have to have pressure to ajde in the proper circulation.

Feb 07, 2010 | 1998 Pontiac Grand Prix

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