W164 coolant leak. Jan 31, 2021 · W164 M-Class.
W164 coolant leak Common Causes of Coolant Leaks. May 12, 2021 · The leak started off very slowly with a top up every month or two. Mercedes-Benz ML350 Coolant Leak: Causes & Repair Costs May 25, 2023 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 19, 2013 · ML 320 CDI oil leak Had the dreaded oil leak. Most radiators are made of metal and plastic. Damaged Hoses. As the coolant ages, the additives breakdown and being to form solid deposits. Leaking coolant / antifreeze is one of the more common types of leaking fluid from ML320 engines. I was getting the Top Up Coolant message and thus topped it off every once in a while. Buy YHTAUTO Engine Coolant Recovery Overflow Reservoir Expansion Tank W/O Pressurized Cap & Sensor For Mercedes-Benz W164 ML320 ML350 ML450 ML550 SLS AMG GL320 GL350 GL450 GL550 Replace for# 1645000049: Coolant Recovery Kits - Amazon. I poured a small bottle of UV leak detector fluid in the coolant and drove it around for 30 minutes or so. 3. Jul 30, 2017 · Mb coolant is hoat coolant instead of just ethylene glycol like the green coolant, it has better heat transfer properties as well as better corrosion inhibitors and has a longer life than green coolant. com/scanner/Get Factory Service Repair Manuals & Specs https://www. The inlet hose to the can is black and oil is accumulating in the drain after only 1K miles. Aug 25, 2019 · So, there's coolant loss here and I found that there is dirt in the coolant. 000 miles. Mar 9, 2023 · How serious is a coolant leak? The engine needs the coolant to maintain a normal operating temperature. Sep 9, 2011 · I noticed a coolant leak which was collecting at the bottom of my passenger side front bumper just in front of the wheel. Whatever you do don't buy a W164 with air suspension, very little functional advantage and very problem prone and Dec 8, 2020 · M275 V12 TT coolant leak - drip from bell housing. I get to the guys house and see a nice puddle on the floor. I got the green florescent light coming from just under the thermostat housing area on the block. Oil was leaking down the transmission bell housing, but it wasn't in the rocker cover gaskets. Dec 30, 2022 · Usual symptom is oil leaking in the two locations discussed above. May 18, 2023 · coolant leak Jump to Latest 286 views 0 replies 1 participant last post by benzguyml350 May 18, 2023 Dec 8, 2024 · Remember, detecting a coolant leak promptly can save you from more serious engine issues. All that in 3K miles. Car has 334. They may tell you the cap is leaking under pressure or intermittently. Below are three typical sources of leaks. Leaks typically develop when transmission lines connect to the transmission cooler/radiator. Identifying the common causes of coolant leaks helps you take timely action to prevent severe engine damage. Radiator might have a small leak. When this occurs, serious engine damage is sure to follow. Dec 11, 2012 · Well, I had gaskets and seals replaced. May 5, 2020 · just a little update on the coolant loss, so after using the UV test i have finally found where the problem is. If you discover some wetness at that point, you should monitor the vehicle closely for increased oil loss. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your ML350 engine and keeps it from overheating. Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2007 ML350 with the 3. I want to clean than while determining a loss I'm having and it could take some time; couple of weeks of tests maybe to make sure since I don't drive much these days. Everything looks okay until I spot some chocolate colored thick fluid on suspension located under coolant expansion tank. 5L V6, W166 Chassis). com FREE DELIVERY possible on eligible purchases Oct 26, 2021 · It leaks enough to be noticed certainly but in two months I have not even noticed any appreciable drop in the oil level when I check it. Replaced the turbine inlet seal which was covered with oil. I'm wondering what will happen if I don't fix it. Usually a fairly slow steady leak, but there are a few reports of sudden increase in oil leak rate with low oil pressure lights coming on. I don't want to add too much pressure to the system. Sent from my XT1635-01 using Tapatalk Apr 25, 2010 · DTB S-B-01. Then added the vent catch can. Very common to leak around where return hose attaches to tank. But I made it short way: Purchased 2" long 20 mm inner diameter piece of coolant hose and two clamps and slipped the 2" hose over the plastic part at engine compartment and tightened it with 2 clamps. I top it off every time with the correct coolant but this time I decided to rent a coolant pressure testing kit to add pressure and monitor the gauge and check for leaks. youcanic. We can't help you on the internet, because we are not there looking at the car. Tow car, two miles home. Oct 8, 2014 · Well, I 've seen more then few of these leaking pumps over the years His description of where the coolant is visible is classic pump leak from the weep hole. Woho I am just surprised that at just 100,000 km . Looking down from the top, and taking out the window washing tank, I saw no visible signs of a leak and no wet area. The fuel filter has a heater that is warmed by coolant, they are known to leak onto the inlet manifold below, then it might travel anywhere before going down. No fluids on the ground under the car. Reactions: cowboyt, Dave2302, JC220 and 1 other person. If the coolant leaks and can’t keep the temperatures down, the engine will overheat. Water pump would most likely leak from pulley bearing. So just re-tightening the bolts will only slow the leak and the bolts will work loose again over time if the original lack of "Loctite on the threads" issue is not corrected - see below. If your Mercedes Coolant level warning comes on the cluster it's possible that you have a coolan leak. Nov 23, 2022 · Most common coolant leak on this engine. Jump to Latest 2007 W164 ML320CDi, 2002 W220 S280. I kept driving another 15 miles to work, and closely monitored the temperature gauge. It must be the failed stop leak additive usage attempt in the past (never again). All manufacturers have a recommended service interval for coolant renewal. What I would check 1. 3) Overflowing Reservoir. . 0 liter Jul 26, 2020 · It's a money pit. I'm sure your really good mechanic filled it with green coolant because that's what he had laying around. Jul 31, 2022 · Have a 2001 ML 430, no 3-way plastic connector noted, leaking hoses behind engine, unable to get to unless maybe through Firewall? Installed new coolant Tank hose from heater to back of engine with temporary splice but still have bad leak which is hard to get to. Jan 15, 2009 · Hey guys, I had a call today to fix a coolant leak on an 04 ML-350. I thought it was the water pump which I replaced a couple of days ago and the car is still leaking like crazy. Now over the last 6 months or so, I've had to add coolant to the system increasingly often, almost every two weeks the last two months. The leak was from the EGR cooler seals. there is a little crack on the radiator plastic housing where the top pipe connects. HOWEVER, last year I started noticing the need to add coolant to overflow well, but only rarely. I thought for sure he had a loose hose clamp, possible water pump leak, or the classic top drivers side nipple broken off where the hose connects at the radiator from the resevoir tank. Does anyone have a DIY guide available to replace the water pump. Today I repair a Mercedes Benz AMG E63 with a common problem, ( aside from the turbo cooler lines ) is the heater hose coupler located on the ba Mar 29, 2012 · There are many small coolant hoses in that area, as well as the thermostat housing and the coolant transfer block between the 2 heads. amazon. 9K views 18 Nov 27, 2023 · Hello guys I got a pretty bad coolant leak right under the driver side on my ML350 4Matic (M276 3. Hi everyone. - Answered by a verified UK Auto Mechanic Nov 11, 2012 · I have had a slow coolant leak and finally found it. don't know which other models use the same rad, but work a check if someone is losing coolant too. The o-ring very rarely leaks, unless incorrectly installed That would leak right away, not 20 years later As for head gasket, I've never seen a M103 leak externally coolant Only oil @ the May 19, 2020 · W164 ML350 CDI Oil Leak Thread starter rmvembe; Start date May 19, 2020; May 19, 2020 now coolant leak Brenthornn; Nov 30, 2024; Engine; Replies 8 Views 289. Coolant usually leak on small hole on radiator, or a gap in the gasket, while oil usually leaks on the seal. (Water pump, vacuum leak from water pump) 5. Check the fluids after a day or two and see if there's any oil in the radiator fluid. Aug 29, 2009 · I found a leak on the side of my radiator after the flush. Nov 29, 2012 · Drain coolant, remove&reinstall wipers, wiper linkages, cowl moldings, turbo, exhaust down pipe, firewall, EGR pipes, air cooler tubes, all under engine covers, intake manifold, turbo support, oil cooler, replace seals, clean surface, decarbon intake manifolds & reinstall, adjust level of coolant and 2L of oil, oil cooler and oil lines for Sep 18, 2018 · About halfway to work (15 miles), the low coolant message came on again. 40/25 MAR09 - M273 engine (S550) slow coolant loss without any trace may (vaporizes) be an internal casting flaw in the area of the valve cooling passage between the cylinders allowing coolant to seep into the crankcase metal sleeves will be installed into valve cooling passages. It a appears to be coming from behind and just to the left of where the lower radiator hose connects to the thermostat. Jun 25, 2018 · We had an oil leak in this ML320 Diesel. Apr 11, 2011 · And yes, it leaks when the car is cooling down (about 1/2 hour after you park it) basically, when the thermostat closes back down, and pressure builds up in the small coolant circuit (bypassed radiator) Jan 2, 2020 · Mercedes w164, water bottle changed, due to leak. The plastic parts can become brittle and crack over time, causing a leak of coolant (typically green or pink in color). Water pump might have a small leak 2. Jan 31, 2021 · W164 M-Class. Still have the oil leak. Lots of it. When the engine coolant level is low, the water pump may not circulate coolant and cool down the engine. Raise the hood. While you may not notice coolant leaking from under the radiator cap, look out for these white streaks. Hoses carry coolant between the engine and radiator. Explore common causes and repair costs of coolant leaks in the Mercedes-Benz ML350. Therefore, prompt action was required to identify the source of the leak and Feb 3, 2017 · I hear what you are saying PWRSTAR, but there is really no way to "diagnosis" the oil leak. Another reason that can cause the coolant light to stay on after topping up the coolant is a faulty sensor. They could fix one at a time and clean the engine after each. This type of issue, if left unattended, can lead to severe engine overheating and possible engine failure. I took it to the dealer and now they say I have a oil cooler leak and a rear main seal leak. Try some dye in the coolant so you can see just where its leaking out from. Watch the video inspect yours and change it if needed. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your ML320 engine and keeps it from overheating. Mar 2, 2022 · 🔧🔧 AMAZON STORE: https://www. If you see a leak on the radiator, try to patch it with the liquid version of the radiator seal (silver bottle with metal flakes). Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2007 ML320 with the 3. The oil leak can develop to the point that all transmission fluid is lost. Leak isn't too bad, about 1 L in 3 weeks. com/shop/drewfixit 🔧🔧In this video I demonstrate how to do a Total Radiator Coolant Flush on a Mercedes ML or GL Vehi The video above shows you where the coolant reservoir in your ML350 is located and how to check the coolant / antifreeze level. Sep 9, 2015 · I have had a coolant leak from my 2008, W164 ML-420 CDI for the past few weeks. Sep 28, 2023 · I would take a look at the reservoir tank. Therefore, coolant is vital to the normal operation of your car, so you shouldn’t avoid fixing Aug 19, 2024 · Coolant Leak From Engine The Problem: Coolant Leak From Engine. Jan 22, 2006 · Coolant and oil leaks are different animals. Can I go through wiper vent panel & cut through firewall? Water Cooling System auto parts for Mercedes-Benz ML-Class (2006-2011) W164: Coolant / Antifreeze, Cooling System Additives, & more and other parts related to Radiators. Sep 9, 2021 · The EGR cooler is known to perish inside mixing coolant with exhaust, from that there might be evidence of white, sweet smelling exhaust smoke. Picking it up tonight, fingers crossed that's it fixed now. affiliate link for this p Dec 17, 2023 · But in case the seals are gone then maybe oil can flow throught there to the coolant floe side. If you need to add anti-freeze, be sure to check your owners manual to determine the correct type of coolant to add - in Mercedes-Benzs, it usually located in a section titled Fluid Capacities towards the end of your Dec 28, 2022 · Mercedes-Benz cars equipped with a 7-Speed automatic transmission may leak transmission fluid from the O ring fittings. Radiator reserve might have a small leak 4. The vehicle arrived at the workshop with the owner’s complaint of a coolant leak from engine. Feb 9, 2014 · After replacing the upper and lower radiator hose, the thermostat and the coolant temp sensor, I've developed a pretty good sized leak. I also remember one case reported where the seal had become so dysfunctional that oil was leaking into the coolant system. During this time, I'd look for the source of a leak without results. com/manualsAsk Car Questions & Get Apr 22, 2013 · Today i took the car for service A and the service advisor told me there is excessive oil leak around the bellhousing area/oil coming from V block side drain bores. There are known leak points. Sep 22, 2017 · Joined May 14, 2017 Messages 21 Reaction score 2 Location West Sussex, UK Your Mercedes 2006 ML 320 CDI W164 Feb 28, 2009 · It needed it. Will it get to the point where it's crazy bad or will it likely remain where it is more of an inconvenience (and a mess to watch out for) than anything else? Apr 6, 2021 · Buy YOUCANIC Pro Scanner https://www. Quick video on how to change oil cooler seals on Mercedes V6 diesel engine (642) May 30, 2017 · Leaking coolant? This repair is on a common component that fails over time. Mar 18, 2013 · I seem to have developed a coolant leak in my 2006 ML320 CDi. Sep 9, 2015 · Manifold cleaned up well, gave the EGR's a good clean whilst in there. Nov 20, 2024 · The water pump pushes the coolant inside the engine, taking away the heat generated by combustion. The leak wasn't visible as the coolant evaporated off the hot engine. May 5, 2018 · The pump will have a weep hole for the coolant to leaks out from, thats if the seal in the pump is shot. Jun 30, 2013 · angelglo - To answer your question specifically: The bolts loosen and back out then over time and under stress/use the o-rings get damaged. A failed oil cooler seal will leak amazing amount of oil fast- like quarts. It We found that the Aug 3, 2014 · Your situation seems like you might have a small leak somewhere. When the car's off, it drips below from the ac compressor area. 45 minutes maximum to replace. Radiator sealers are the stuff, that swells and hardens with the air. Coolant goes into the reservoir tank as it Nov 12, 2022 · You may need to check for leaks in the coolant reservoir or the hoses connecting the tank to the radiator and engine block. Back pressure from the system might cause it to push out the reserve tank. Leaking coolant / antifreeze is one of the more common types of leaking fluid from ML350 engines. Continuous leaks will lower the coolant level even after the top-up. Watch this video on how to find and fix these leaks. Run your finger down the seams on each side to see if there is any coolant. So unless they showed you failed bond on the oil cooler seals, it's an assumption. I replaced the entire front end including air struts, then the rear SAM module (the usual tail light seal leak), it needs rear airbags/shockers and the torque converter is on the way out. Jun 11, 2018 · Initial signs of the oil leak may be a small collection of oil at the bottom of the transmission bell housing. As I was getting the brake problem sorted I asked my local garage to check it out for me. Black pepper supposable does the trick, while most of the oil "sealers" are softening the seals to swell them. Might be the joint to the block, as some have a small O ring seal, if they are not fitted correctly can fail and coolant will escape . Nov 23, 2024 · I have a 2013 Mercedes Benz ML350 4 Matic. It slowly worsened over a number of months to requiring a top up every week. I've had 3 go bad. You might need to take the intake tube off to get a better look. Once the seals start to leak slowly the rate of leak will increase very fast. I'm getting low coolant alerts on the dash on a regular basis. 5 liter Jul 14, 2011 · I had the same leak. If you have a coolant pressure tester, even better. So I had to open only that one connection - the coolant pipe coming from engine to the plastic part. Another common leak point is where the plastic ends attach to radiator body. They suspect oil cooler seals leaking and gave me a estimate of $2200. The AMG was driven and re-inspected for leaks and the real culprit was discovered: O-ring failed at the block where the oil is routed to the oil cooler. how can there be excessive leak. If you don't see any leaks, then your issue may be more serious. Strangely the O-ring seals under pressure when the engine is running and begins to leak when parked. Coolant passes through several hoses to the radiator, where it cools down and returns to the engine to repeat the cooling process. May 18, 2023 · When coolant leaks out of the radiator filler neck and dries, it often leaves white streaks behind. Coolant leak front drivers side, cant locate! Jump to Latest 7. Radiator Hoses Apr 13, 2024 · C-Class (W203) - 2003 C230k M271 - coolant leak at back of engine - Has anyone ever seen this before? :confused: My engine seems to be leaking coolant only when cold. After parking, a large surge of coolant spit itself up into the empty coolant reservoir. Open coolant reservoir, and find low water (no alerts on dash) with dark colored sludge at bottom of tank. I think I have read in german forums that the w166 should come with the purple seals but even these have had some revisions through the years and the revision in 2016 is the latest and most durable one. At work, I parked, and noticed a huge pile of coolant on the ground under the coolant reservoir area. Find local RepairPal Certified shops and get expert advice on maintenance. Now find vehicle is heating up and the cooling fan is not working. Jul 30, 2011 · soooo, ive had to keep putting coolant in the car every couple days, and couldnt figure out for the life of me why im constantly having to put coolant in my car, first i checked all the hoses, they are fine, radiator is brand new, as well as thermostat, etc, second i think head gasket, check oil, no mixing, check coolant, its fine, doesnt Oct 31, 2014 · I roll up ten minutes later. The car would empty the expansion tank within 2 to 4 days so it's pretty bad. I can see water pouring out of the area where the water pump is. xjtot zkzcg upkt hcew ntv zlshi zshgc dmerkbgw uydvq ujatd