Skip the auto shop - Our mechanics make house calls

Q: Engine not running correctly after rebuild

asked by on

I recently had my engine rebuilt, but the mechanic who did the work, did a rush job. I believe my issue stems from bad valve seals or possibly piston rings. I feel like I should get a compression test done first to help determine the true nature of my problem.

A: I’d need to know the symptoms you are havin...

I’d need to know the symptoms you are having but I’m assuming the engine is burning oil. Valve seals control the oil that lubricates the valve stems and prevents it from seeping into the guides in excessive amounts. The piston rings seal the combustion chamber and stop oil from getting in. Problems with either of these two items could cause you vehicle to burn oil. A trained professional, such as one from YourMechanic, has the right knowledge and equipment to diagnose your vehicle and determine what repairs should be made.

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: Huracan 5.0. creates white smoke on colder days

It probably is the valve seals. You want to hope it's not the head gasket blown. To check the head gasket is simple. I've got a video that tells you if your head gasket is blown. It's a simple test--the...

Q: When I start my car, it shakes and smells like gas.

You could be getting a fuel smell from a fuel leak, or you might be getting a raw gas smell in the exhaust. Since you seem to have a misfire, I think you might be smelling it in the exhaust....

Q: Installing cold air intake - 2007 Jaguar XK

K&N is a reputable manufacturer of this component (and there are others). Call or email them for specific part numbers for your vehicle.

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...