Skip the auto shop - Our mechanics make house calls

Q: Coolant leaking, engine might be messed up now

asked by on

My 2006 Honda Civic was running fine up until a couple of days ago. I found a puddle of coolant under the car, so I checked under the hood but didn’t see anything leaking. I turned the car on to see if anything was different. The engine was making a really concerning rumbling and after a minute it was running so rough that I had to shut it off. I’m afraid that the engine might not start when I turn the key again and there seems to be coolant leaking from the engine itself! I really need help with this problem as my car is still below 100,000 miles and I can’t afford to trade it in for a new one yet!

A: You are correct in not wanting to start the...

You are correct in not wanting to start the car to avoid any further damage. It sounds like you might have coolant leaking into one of the cylinders due to an engine block failure, resulting in a misfire. What needs to be done is to remove the spark plugs and pressurize the cooling system, then have the system inspected under pressure to find the source of the leak. When the technician has determined the source of the leak, action and/or repair can be determined/performed. If the engine block is determined to be the source of the leak, it would be advisable you give Honda a call with your VIN number to see if your car is eligible for the warranty extension on the engine block. Back in late 2010, Honda issued warranty extension number 10-048 for an engine block failure that leaks coolant. To have your vehicle inspected, please contact YourMechanic and one of our certified mechanics will be happy to inspect your coolant system leak.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Window no longer rolling up

Hello, I would say that you are correct, the window regulator probably broke. Window regulators in modern cars are made up of a cable and plastic. Usually one of the plastic guide wheels break and the window no longer goes...

Q: 4 wheel drive not really working

Greetings and thank you for writing in with this question! The all-wheel drive system on the 2009 Sorento is a front-biased system that automatically sends power to the rear wheels depending on driving conditions. There is a 4-wheel drive “low”...

Q: Where is the plug in for the code reader? 2013 Honda Civic

I am working on this

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...