Skip the auto shop - Our mechanics make house calls

Q: Noticed a small oil leak and intermittent coolant leak

asked by on

Had a recon engine fitted in January 2016. Noticed a small oil leak and an intermittent coolant leak on road. Also blue smoke on a cold start only. The van runs and drives fine.

A: Hello. The blue smoke on startup is likely ...

Hello. The blue smoke on startup is likely worn valve stems or valve stem seals, which leak a tiny amount of oil overnight, but burns it off quickly. Nothing to worry about unless it gets worse quickly, or smokes all the time (piston rings). To determine the source of the oil and coolant leak, I would recommend having an oil & fluid leak inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem and follow through with repairs.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Rear wheels goes side to side when I drive 10mph

Without doing a through inspection of the front and rear suspension, I could not guess which one is bad on your vehicle. It may be bad wheel bearings, faulty lower control arms, or even bad tie rods. If you need...

Q: antifreeze is leaking and spots going on my windsheld

Engine coolant can leak externally through a hose, radiator, water pump, etc. External leaks are typically found by simple pressure testing of the cooling system. To find the leak that exists in your case, and get the required repair estimated,...

Q: Plug off oil line ?

I would suggest hooking everything up the way it was intended from the factory, to ensure proper operation. If you're not planning on using the alternator that was designed for that motor, then I would suggest looping the oil passages...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...