Q: Coolant leaking from reservoir

asked by on

The car was running good until I heard something pop. When I checked under the hood, I saw that the radiator neck was broken and the hose was detached. I had the radiator replaced and the car drove fine after that with no warnings. If I drive more than two miles, the car overheats. The coolant leaks from the reservoir, but I am not sure why.

Hello. It sounds like when the radiator neck broke off, the engine got overheated. It is common on most modern cars that have aluminum cylinder heads the head gasket will fail soon after overheating. If your head gaskets have failed, this would cause overheating and coolant loss. There are some tests that can be done to see if the head gasket is blown. The easiest one to look at is the coolant’s color. If the gasket has failed bad enough, the coolant will have mixed with the oil giving off the color of chocolate milk. If your car has a dipstick, pull the dipstick and see if it looks like chocolate milk. If it looks like regular oil (clear tan to a black), the other testing must be performed. Since some of this testing will require a running engine and might have to do with hot coolant, a mechanic may be needed to confirm a blown head gasket.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Coolant leaking from reservoir

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Buying used BMW 2009

Nothing adverse appears on the Carfax report. There don't appear to be any outstanding recalls. Inasmuch as used car repair, maintenance, and restoration costs are highly dependent on the actual, as found, condition of the vehicle, the only way to...

Q: Q: I have water and fuel in my oil

This is due to a possible blown head gasket near the number 6 cylinder on the engine. You have aluminum heads and may have a crack in the head. I would recommend having the system checked by a certified technician...

Q: Brake malfunction dynamic drive on 2005 BMW 745Li

Hello. It sounds like your 2005 BMW 745Li may have a problem with your electric/charging system or that the battery is faulty. If the electric/charging system is charging too low, it will cause the electronics to go “haywire” because the...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.