Skip the auto shop - Our mechanics make house calls

Q: I recently had my camshaft and an oil leak supposedly fixed. i drove 250 miles and felt the car almost breaking down. Had to put i

asked by on

I recently had my camshaft and an oil leak supposedly fixed and new oxygen sensor. I then drove 250 miles and felt the car almost breaking down. Had to put it into a different garage. They have told me there's a hole in a valve and lack of compression in a cylinder. Is this something that should have been originally spotted by the first mechanic when their was symptoms of an oil leak which then persisted and after they fixed it had to fix it again adding a new oxygen sensor - should they have spotted that there was a hole in the valve and it was a cylinder problem?

My car has 61000 miles.
My car has a manual transmission.

It would really be difficult to determine what happened or should have been seen at what point. The only thing I can say with certainty is that if a valve had a "hole" in it, the vehicle would not have run 250 miles before running poorly. It would have been running poorly immediately. The engine would have been running on 3 cylinders the entire time. Also, a bad oxygen sensor would not be the cause of an oil leak. Oxygen sensors are placed in the exhaust system, one before the catalytic converter and one after. The engine control unit uses these sensors to read the amount of unburned air and fuel in the exhaust. Then the ecu uses other sensors like coolant and air temperature sensors to add or remove fuel from the air/fuel mixture. An oxygen sensor can be damaged by an oil leak but would not be the cause of an oil leak.

I wish I could give you a better answer but without physically seeing what was done and what happened, I can only guess.

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
  • Home
  • Questions
  • I recently had my camshaft and an oil leak supposedly fixed. i drove 250 miles and felt the car almost breaking down. Had to put i

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: Should the lights on the Rev counter be red when car is running?

The engine is designed to not go over a certain amount of RPM or engine damage can result. If you look in any vehicle that has an RPM gauge, it will have what is called a red line that the...

Q: I have an electrical problem on my car and I have no idea what it is. I have a 2008 mustang v6 and the lights, interior and exter

It is possible that you could have an alternator failure. A lot of times when the alternator stops functioning properly, the vehicle will show multiple signs of electrical failure. No circuit on the vehicle is exempt from the possibility of...

Q: Helicoiled spark plug

A helicoil in a spark plug hole of the aluminum cylinder head was installed in the past due to a spark plug threads in the cylinder head came out during spark plug removal or the spark plug blew out of...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...