Purpose of Leak Testing Parts • Confirm manufacturing process is performing to specification and making good parts Honest John suggests a few solutions for readers problems with disappearing coolant in his VW Passat. The level should be between the min and max line, that is an acceptable level. That means cooler running. This isn’t truly a closed system. How to Establish an Acceptable Leak Rate Purpose: This Application Bulletin is to provide an overview of how to establish an acceptable leak rate. Initially I thought that perhaps I had had a small airlock … 2002 S 4EAT SubaXtreme Sump Guard, Lift & Bullbar 215/65-16 General Grabber AT2. For the rest of the cooling system, it says 2 minutes. The loss-of-coolant accident (LOCA) is one of the possible accidents for light water reactors (LWRs). Was the coolant pressure test done with a hot or cold engine? M. — If changing from a conventional to an ELC product flush the system thoroughly first unless conversion fluid is used. Coolant loss results, without obvious puddles signs. Application Bulletin: #120 Date: Oct 2014 . Joined: Feb 2, 2015 Member: #147773 Who is correct? Mar 26, 2017 at 10:52 AM #2 #2. ... also then advises the owner to “Have the cause of the coolant loss eliminated as soon as possible.” ... the idiot manual doesn't give you a list of acceptable … The line will be replaced on Saturday. Reply. Technician B says a heater control valve stuck open may be the problem. Issue: Some 2015-2018 Edge vehicles, 2015-2019 Fusion/MKZ vehicles built on or before 8-May-2019, 2015-2019 Escape vehicles built on or before 15-May-2019 and 2015-2019 MKC vehicles … DiscoWeb Technical Boards. Technician B says that a change in temperature from the inlet to the outlet of a fixed orifice tube (FOT) is acceptable. Assuming it was checked, 1 year and 11k miles after that service it needed 1.5 litres of coolant, what is an acceptable amount of coolant loss? LR4/LR3/Discovery Gen4 - Technical Discussions. I asked this question a few months ago,still has the same coolant loss.I have a 305 in my 64 El Camino that uses about a cup of coolant every 1000 miles.This may seem minor,but it's going somwhere.The engine is a 90 305 factory roller block with older #416 305 heads.I picked up the dissasembled engine at cost from a local reptuable machine shop after a previous … I have read in several posts that "some" or "small" coolant loss through through the water pump's weep hole is "normal". Q I have a 2002 Olds Alero with the V6 engine. Hers finally showed the leak this week. If the coolant system for the 04 WRX is the same as it is for the 06 Outbacks, a cup or two of coolant loss over 28k miles is normal. Common trouble spots include heads, hoses, water pump and rear heater core. compensate for coolant loss. These changes are application specific and should be discussed before proceeding. Just got to figure out where it is going. An LOCA is caused by a break in the reactor coolant pressure boundary. It was pointed out that this head loss is commonly compensated for in piping systems by pumps that do work on the fluid, ... (PWR) selected Reactor Coolant System (RCS) parameters that would be used are as follows. In the event that there is significant coolant loss from the system during operation and no Evans waterless coolant is available to fill the system, water or water-based coolant may be used. But how much? Radiator coolant, also known as antifreeze, actually raises the boiling point of the water, too, allowing it to carry more heat away from the engine. However, the use of test kits to maintain a concentration near the minimum side of the acceptable range has never been acceptable nor recommended. In discussion with my local Benz dealer about coolant, I was told that my 2010 C200 CGI should have the coolant changed every 2-3 yrs (not every 15yrs or … Loss of the liquid can lead to the overheated condition but overheating can also contribute to the coolant loss. When a vehicle overheats, or after the engine has been turned off after a long ride, an expansion valve opens inside the radiator cap to allow pressurized coolant to enter the overflow reservoir. gonna change my water pump just for the fun of it, just wondering how much if any coolant loss can be expected, or if anyone has a good idea to recover it. This system includes multiple components: a radiator, a water pump, an overflow reservoir, thermostat, temperature sensor, hoses and channels in the engine itself to remove the heat. With loss of pressure, the liquid coolant will not be able to move through the system. thanks Lthompson, Mar 26, 2017 #1. Inspection of the engine compartment showed no tell-tale clue to the source of the leak but after removing the center plastic cover from beneath the car I could see minor moisture. … Coolant smell since day one on both, no apparent loss of coolant, but it was low from the factory so I have added to both. RCS ΔT (T Hot − T Cold) should be 25-80% of the full power value and either steady or slowly decreasing. There was a small puddle of coolant under the truck when I purchased my 97 with 5.7 four years ago. '99 Eldo -what is the acceptable weekly fluid loss in surge tank per week - with moderate driving = < 300miles per week? msggunny Well-known member. From reading on this site, seems like some coolant loss is acceptable, but my mileage is pretty low and I don't live in a hot climate. This allows the hot liquid coming from the engine to move through the series of tubes in the radiator, allowing the liquid to cool down as it moves along. Acceptable coolant loss? Look around for leaks if the gauge shows any pressure loss. Other sources say the gauge … Ok, simple question - When doing a pressure test on your cooling system, how long should it hold pressure? Hi all, When I first got my S, the top narrow tube that goes across the top of the engine had a slight leak. I topped it up and all has been fine however about two months ago I noticed that the coolant level was about two inches below the level it should be. If you're running low, things can get steamy fast. If you smell something sweet when you turn the heater fans on, it may be a coolant leak at one of the heater cores, or simply the O-ring at the rear heater valve leaking. Occasional coolant smell and nearly imperceptible coolant loss was traced to the turbo. Her new radiator is … Please contact Evans Tech Support at 1-888-990-2665 or tech@evanscooling.com. slow leaks here evaporate away leaving the coolant residue behind. Your vehicle’s coolant system helps to keep engine heat at recommended levels for your car’s optimum operation. A good-quality antifreeze of the ethylene-glycol type, with full anticorrosive additives, should be left undisturbed in the cooling system for about three years — summer and winter. I have been slo – alephzero Sep 26 '15 at 18:17 Do not drain the system during summer and replace the mixture with water … Once the issue is confirmed, the engine will have to be replaced. Where is the Coolant? I'm 99.9% sure coolant level was at full (cold) mark while doing walk around when picking up this truck new. The only times I've had a significant amount of coolant loss, in 30+ years motoring, has been caused by a leak somewhere. Re: How much coolant loss is acceptable? "Acceptable" coolant loss? 2015WhiteOR Well-Known Member. I have been told it is a slow leak from the intake gasket. - 09/06/13 The older Chevy Vortec was known for failed intake manifold gaskets and heater hose attachment hardware failing. B only. 2013 Oxford White ST3 (Stage 4): (344whp/341tq) vdyno ... Update** Ford Dealership says there was a pinhole sized leak in the coolant line which was the source for loss of coolant. Glycol breakdown products are acidic and contribute to a drop in pH. With Evans waterless coolant, the likelihood of coolant loss and the need for topping up are greatly reduced. Ordered in May 2016, drove off the lot in September, 2016 Current milage is 14,979. After that time, flush the system (See How to flush an engine radiator) and replace the coolant with fresh antifreeze mixture. — Coolant components listed above do not reflect all components utilized in all 2nd generation ELC coolants manufactured. Some leaks can open up (or close up) as the engine warms up. Thread starter msggunny; Start date Mar 5, 2015; Forums. Coolant loss is not normal, but could be a simple design flaw that can be fixed. Save Share. The gauge from Autozone says the cap should maintain within the range for the pressure rating (ie, a 16 psi cap should maintain in the 15-17 range during the test) for 30 seconds. Still waiting for mine to appear (both tested fine last year). Using a temperature gauge will tell you whether the engine is running hotter than usual or not. — Mixing ELC coolant formulations with conventional coolant will degrade ELC benefits. Some coolant technologies can protect as low as pH 6.5, however, it is typically not good practice to allow a coolant to operate below a pH of 7.0. New TSB 19-2172 released today pertaining to coolant loss and misfiring issues with the 2.0L EcoBoost engine. When using Evans Coolant in the engine cooling system these pressures can be decreased to maximize the system's flow and temperature control capabilities. Look for coolant stains in the V of the engine, and around any coolant pipes. Recently I noticed that coolant is leaking. The radiator of any vehicle is considered as a pressurized system. Usually the filler cap doesn't get opened for years on end. Overflow Reservoir. I replaced it and obviously lost some coolant during the process. Just fill up the tank to the maximum limit and keep an eye on the engine condition and the rate of coolant usage. Once a coolant has degraded, due to glycol breakdown and pH drop, engine metals are at risk for corrosion. If no coolant loss is experienced, gradual Extender/SCA concentration increase is possible. Overconcentration can be avoided by test kit monitoring. 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