Skip the auto shop - Our mechanics make house calls

Q: Drop in engine compression.

asked by on

I think I have lost compression in the motor.

Loss of compression in an engine is a serious problem that usually results in a complete engine rebuild or replacement. Since this is a big job to diagnose, it is very important you have a certified mobile mechanic look over your Altima before any drastic moves are taken. A mechanic will be able to perform what is known as a compression and leak down test on your vehicle. This will determine if indeed your car does have low compression and if so the leak down test can tell us why this is happening.

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
  1. Home
  2. Questions
  3. Drop in engine compression.

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 noise when cranking. P0011 and P0021 codes

Hi there. The P0011 OBD-II error code indicates that you have an over advanced timing issue, which might be the reason why your engine stumbles for a brief moment when it's cold and first starts. Ignition timing is typically monitored...

Q: Ac suddenly started blowing hot within seconds

Hi Jaclyn. Thanks for contacting us today. Usually, an instant problem like this is a failed pressure switch or compressor wiring that has failed. However, it could be due to damaged low or high-pressure line as well. These type of...

Q: Clutch has less resistance than normal

If you are noticing that the clutch is getting too easy to push, this could indicate that your clutch pressure plate is growing weak from broken or overheated springs in the clutch. It could be something else if you have...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.