Skip the auto shop - Our mechanics make house calls

Q: Problem with number five cylinder.

asked by on

I am having a problem with the number five piston cylinder. The piston rings may be damaged. I had a combustion test performed and the readings on this cylinder were low. The car engine is shaking and rattling violently.

If you have low compression on a cylinder, you can determine whether the problem is with the top or bottom of the engine with a wet compression test. This test involves squirting a little oil into the cylinder; if the compression reading improves with the oil the problem is likely worn rings, a worn piston, or a worn cylinder wall. If it does not improve, suspect a problem with the valve train. A certified technician from YourMechanic will be able to inspect your vehicle for you.

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!
  1. Home
  2. Questions
  3. Problem with number five cylinder.

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: Engine

Hello there, the 2005 Jaguar X-Type came equipped with one of two engines. There is a 2.5 liter engine and a 3.0 engine. I can not tell exactly which engine you have with the details listed, as both engines could...

Q: Broken glove compartment.

The problem you are having is not a common problem and the actual part that broke would need to be known. Is the latch broken or is one of the hinges broken? My recommendation is to have a technician check...

Q: Car has white smoke coming out of the left exhaust when idling or just after pulling off from a stop. Fine after that

Are you losing coolant? If so, the white smoke (steam really) is coolant being lost out of the exhaust. If the car only does this when first started in the AM, it may simply be condensation being burned off, which...

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...
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...