Skip the auto shop - Our mechanics make house calls

Q: Timing chain valve is bad

asked by on

The mechanic told me the problem with my car was the timing chain valve was bad. This is causing the engine to become overloaded with gasoline, with the result the car shutting off while in idle. The Engine light has been on for a while and it has also been burning oil. I am looking for a second opinion on this.

A: A worn timing chain can cause some camshaft...

A worn timing chain can cause some camshaft timing to become erratic and cause a host of engine running issues. However, there is a tensioner on the lower part of the engine that is supposed to remove the slack automatically as the timing chain stretches. The oil consumption and the "Check Engine" light also need to be taken into consideration. The faults should be read out of the engine to determine if there are other faults. You should also check if the camshaft timing is way off due to a worn timing chain, if it is, there should be some faults stored to confirm this. Oil burning is usually an indication of excessive engine wear (piston rings, valve guides, etc). Mechanical condition of the engine should be assessed before investing in a costly repair such as a timing chain replacement. My recommendation is to have another mechanic, such as one from YourMechanic, assess your engine and inspect you engine computer's fault memory to be sure this is the necessary action to correct your engine's running issues and to determine why your engine shuts off when you idle.

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: Engine valve leaking. 1998 Ford Crown Victoria.

Hello. It sounds like you may have a valve cover leaking. If it leaks, the oil can get on the exhaust and cause smoking, and if it gets on the oxygen sensors, then the car will run like this. The...

Q: Engine

To properly diagnose this, more information and testing is needed. The next time this occurs, take a look at the temperature gauge. A thermostat that sticks intermittently can cause the vehicle to overheat. The result is that the engine oil...

Q: Acceleration issues and car dying

Hello. There are certain cases where an oxygen sensor can cause performance issues. It would depend on the specific trouble code. A few things I would look at are the specified oxygen sensor or circuit, the ignition coil, the ignition...

Related articles

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...
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...
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...